The world could not have survived without these.
INVENTION INVENTOR YEAR
Alphabet blocks Adeline D. T. Whitney 1882
Apgar tests, which evaluate a baby’s health upon birth Virginia Apgar 1952
Chocolate-chip cookies Ruth Wakefield 1930
Circular saw Tabitha Babbitt 1812
Dishwasher Josephine Cochran 1872
Disposable diaper Marion Donovan 1950
Electric hot water heater Ida Forbes 1917
Elevated railway Mary Walton 1881
Engine muffler El Dorado Jones 1917
Fire escape Anna Connelly 1887
Globes Ellen Fitz 1875
Ironing board Sarah Boone 1892
Kevlar, a steel-like fiber used in radial tires, crash helmets, and bulletproof vests Stephanie Kwolek 1966
Life raft Maria Beaseley 1882
Liquid Paper®, a quick-drying liquid used to correct mistakes printed on paper Bessie Nesmith 1951
Locomotive chimney Mary Walton 1879
Medical syringe Letitia Geer 1899
Paper-bag-making machine Margaret Knight 1871
Rolling pin Catherine Deiner 1891
Rotary engine Margaret Knight 1904
Scotchgard™ fabric protector Patsy O. Sherman 1956
Snugli® baby carrier Ann Moore 1965
Street-cleaning machine Florence Parpart 1900
Submarine lamp and telescope Sarah Mather 1845
Windshield wiper Mary Anderson 1903
How the hell does somebody INVENT the fire escape. Its just a second DOOR.