3000 B.C Hsi-ling-shi develops method of gathering and weaving silkA.D.1715 Sybilla Masters new method for cleaning and curing corn1793 Catherine Littlefield Greene(controversial)supplied Eli Whitney with the ideas for the cotton gin1793 Mrs.Samuel Slater improved cotton sewing thread1809 Mary Dixon Kies process of weaving straw with silk or thread1843 Nancy Johnson hand-cranked machine for making ice-cream1845 Sarah O.Mather underwater lamp and telescope1848 Maria Telkes and Eleanor Raymond first solar-heated house1850A Martha Hunt Coston signalflares1863 Clarissa Britain improvement to ambulances1868 Anna E.Corey Baldwin improvements in treating milk1869 H.I.(Harriet)Irwin hexagonal house1870 Margaret E.Knight flat-bottom paper-bag-making machine1870 Mary F.Ports “Sad Iron” improvements1870 Mary Carpenter sewing machine with easy-to-thread needle1871 Margaret Plunkitt Colvin improvement to washing machines1872 Amanda Theodosia Jones vacuum canning1872 Jane Wells baby jumper1873 Helen Augusta Blanchard first improvement on sewing machine1875 Susan Taylor Converse Emancipation Suit(undergarment)1875 Lydia Bonney improvements to undergarments1876 Elizabeth Stiles multifunctional desk1877 Mary Nolan interlocking bricks1878 Maria Beasley improvement in foot warmer1882 Adeline D.T.Whitney alphabet blocks1884 Harriet Strong device for raising and lowering windows1885 Sarah E.Goode folding bed1886 Josephine G.Cochran industrial dishwasher1886 Sarah E.Ball combined work table and basket1887 Maria E.Allen diaper1887 Anna Connelly fire escape1888 Miriam E.Benjamin “gong and signal chair”1889 Anna Breadin school desk1891 Annie Chilton house detacher1892 Harriet R.Tracy “lock and chain stitch”for sewing machine1892 Cynthia Westover street-cleaning cart1892 Leonie Callmeyer means for detecting the opening of sealed envelopes1892 Anna Mangin pastry fork1899 Letitia Geer medical syringes1902 Mary Anderson windshield wiper1904 Anonymous ice cream cone1904 Catherine Ryan Nut and Bolt lock for railroad tracks1905 Madam C.J.Walker hair-care products1908 Melitta Bentz drip coffee machine1912 Carrie B.Averill baby carrier1913 Rose O'Neill the Kewpie Doll1914 Mary P.Jacobs brassiere1915 Laura M.Hicks washmit1916 Madeline Turner fruit press1917 May Conner combined egg beater and potato masher1917 Ida Forbes electric hot water heater1918 Julie Auerbach detachable, self-adjusting corset strap1924 Elizabeth Phillips The Landlord's Game(early version of MonopolyTM)1928 Marjorie Stewart Joyner permanent wave machine1930 Ruth Wakefield chocolate chip cookie1938 Katherine Burr Blodgett nonreflecting glass(“invisible” glass)1938 Gladys Whitcomb Geissmann glove construction1942 Hedwig Kiesler Maukey(also known as movie star Hedy Lamarr)and George Antheil secret communication system using “frequency hopping”1943 Henrietta Mahim Bradberry bed rack to freshen clothes
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