In the United States, only about 10 percent of patent holders are women.<br />According to 24/7 Tempo, this disparity is partly due to the fact that women applying for patents alone are more likely to be rejected by the U.S. Patent and Trademark Office.<br />In addition, patents sought by women are more likely to require revisions that lower the scope of the patent, subsequently weakening it.<br />In honor of the women who overcame these hurdles, here are, 10 things, you didn’t know were invented by women.<br />1. Circular Saw, Tabitha Babbitt, 1812.<br />2. Aquarium, Jeanne Villepreux-Power, 1832.<br />3. Ice Cream Maker, Nancy Johnson, 1843.<br />4. Computer Algorithm, Ada Lovelace, 1843.<br />5. Dishwasher, Josephine Cochran, 1872.<br />6. Life Raft, Maria Beasley, 1882.<br />7. Fire Escape, Anna Connelly, 1887.<br />8. Medical Syringe, Letitia Geer, 1899.<br />9. Coffee Filter, Melitta Benz, 1908.<br />10. Bullet-Proof Fiber, Stephanie Kwolek, 1966
