These are patent designs for early internal menstrual products (predecessors to tampons and cups)
1867 – Hockert (rubber sack with belt)
http://www.google.com/patents/US70843
1876 – Johnston (Cup with external collection pouch)
https://www.google.com/patents/US182024
1884 – Farr (Metal cup with external collection pouch)
https://www.google.com/patents/US300770
1892 – Vernier (adjustable length menstrual collector)
https://www.google.com/patents/US467963
1895 – Dautrich (balloon-like device with attached belt)
https://www.google.com/patents/US535980
1898 – Beach (menstrual cup with pouch)
https://www.google.com/patents/US599955
1903 – Coke & Mallalieu (Menstrual collector with valve)
https://www.google.com/patents/US737258
1907 – Nelson (Rubber tampon-shaped cup)
https://www.google.com/patents/US854593
1914 – Jorgenson (Metal menstrual collector)
https://www.google.com/patents/US1113561
1918 – Norquist (Menstrual cup)
https://www.google.com/patents/US1263797
1924 – Hollrigl – (Reusable rubber bag tampon)
https://www.google.com/patents/US1502503
1925 – Gale – (Rubber mesh covered tampon?)
https://www.google.com/patents/US1555708
1929 – Burill – (Tampon, unsure if reusable or disposable)
https://www.google.com/patents/US1726339
1930 – Spardel (Menstrual collector with external pouch)
https://www.google.com/patents/US1743733
1932 – Goddard (One of the patents used for the Daintette/Foldene cup)
https://www.google.com/patents/US1891761
1933 – Hass – (Applicator tampon)
https://www.google.com/patents/US1926900
1933 – Richardson – (Tampon)
https://www.google.com/patents/US1932383
1934 – Hass – (Tampon)
https://www.google.com/patents/US1964911
1935 – Hagedorn (One of the patents used for the Daintette/Foldene cup)
https://www.google.com/patents/US1996242
1936 – Emery (menstrual collector with bag)
https://www.google.com/patents/US2031638
1936 – Manegold – (Sponge-rubber Menstrual cup)
https://www.google.com/patents/US2061384
1937 – Chalmers – (Menstrual cup)
https://www.google.com/patents/US2089113
1938 – Schultz – (Tampon)
https://www.google.com/patents/US2123750
1943 – Robertson (Reusable? rubber tampon)
https://www.google.com/patents/US2309868
1946 – Beadle – (Tampon)
https://www.google.com/patents/US2412861
1950 – Chalmers (Menstrual Cup)
http://www.google.com/patents/US2534900
1952 – Gordon (Early reusable menstrual cup)
https://www.google.com/patents/US2616426
1963 – Adams (Disposable catamenial collector)
https://www.google.com/patents/US3102541
1964 – Bakunin (Inflatable catamenial receptacle)
https://www.google.com/patents/US3157180
1964 – Nolan (Semi reusable Softcup style menstrual cup)
https://www.google.com/patents/US3128767
1968 – Waldron (Tassette cup)
https://www.google.com/patents/US3404682
1971 – Waldron (Tassette Tassaway cup?)
https://www.google.com/patents/US3626942
1974 – Zaluki (Reusable device with discharge stem and applicator)
https://www.google.com/patents/US3841333
1974 – Zoller (“modern” menstrual cup with grip lines)
https://www.google.com/patents/US3845766
1980 – McConnell (disposable tampon For Johnson & Johnson)
https://www.google.com/patents/US4185631
1986 – Unknown (Chinese long cup with hollow stem and plug)
https://www.google.com/patents/CN85201219U
http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=CN&NR=85201219U&KC=U&FT=D&ND=3&date=19860219&DB=EPODOC&locale=en_EP
1992 – Crawford (Keeper)
https://www.google.com/patents/USD323212
1994 – Contente, Rose, Potter (Softcup for Ultrafem)
https://www.google.com/patents/US5295984
1997 – Unknown (Chinese – Inflatable menstrual cup)
https://www.google.com/patents/CN2260593Y
Original submitted patent (in Chinese).
1998 – Crawford (Keeper)
https://www.google.com/patents/US5827248
2001 – Contente (Softcup designed for Ultrafem)
https://www.google.com/patents/US6264638
2001 – Kamen & Grey (catamenial collector with handle)
https://www.google.com/patents/US6168609
2003 – Zadini (Inflatable cup)
https://www.google.com/patents/US6540728
2004 – Contente (Softcup designed for Insteads)
https://www.google.com/patents/US6796973
2008 – Chambers & Chambers (Diva Cup)
https://www.google.com/patents/US20080077097
2010 – Miin-Tsang Sheu (Reusable cup with disposable insert)
https://www.google.com/patents/US20100312204
2010 – Unknown (Chinese, Looks to be a copy of existing design)
https://www.google.com/patents/CN201481625U
Original Patent submission with Drawings (in Chinese)
2011 – Gook Hoon Lee (Spill proof menstrual cup)
https://www.google.com/patents/WO2011013954A2
2012 – (Lily Compact menstrual cup?)
http://www.google.com/patents/CN202235938U
Original patent submission with drawings (in Chinese)
2013 – Bouhadana (Menstrual cup with hollow stem to empty)
https://www.google.com/patents/WO2013108249A1
Original submitted patent with pictures
2014 – Norman (reusable tampon ball thing)
https://www.google.com/patents/US8690847
2014 – Pitacco & Coretti (Amy Cup with applicator)
https://www.google.com/patents/WO2014015975A1 Full Patent submission with photos
2014 – Shaviv (Cup with “ribs”)
https://www.google.com/patents/US20140012216
2014 – Shihata (Femmycycle)
https://www.google.com/patents/US8795248
2014 – Zhang & Tang (Menstrual cup hollow stem & stopper)
https://www.google.com/patents/WO2014056257A1
2014 – Zhang & Tang (Menstrual cup with release valve in stem)
https://www.google.com/patents/WO2014056258A1
Patents without images
2006 – Chambers & Pickering (Diva Cup)
https://www.google.com/patents/CA2579454A1
2007 – Chambers & Chambers (Diva Cup)
https://www.google.com/patents/EP1796608A1
Other Interesting Patents
This patent for a valve is referenced by Keeper in one of their cup patents – https://www.google.com/patents/US274447
