Product Inventor Date ======= ======== ===== air conditioning unit Frederick M. Jones July 12, 1949 almanac Benjamin Banneker Approx 1791 auto cut-off switch Granville T. Woods January 1, 1839 auto fishing devise G. Cook May 30, 1899 automatic gear shift Richard Spikes February 28, 1932 baby buggy W.H. Richardson June 18, 1899 bicycle frame L.R. Johnson October 10, 1899 biscuit cutter A.P. Ashbourne November 30, 1875 blood plasma bag Charles Drew Approx. 1945 cellular phone Henry T. Sampson July 6, 1971 chamber commode T. Elkins January 3, 1897 clothes dryer G. T. Sampson June 6, 1862 curtain rod S. R. Scratton November 30, 1889 curtain rod support William S. Grant August 4, 1896 door knob O. Dorsey December 10, 1878 door stop O. Dorsey December 10, 1878 dust pan Lawrence P. Ray August 3, 1897 egg beater Willie Johnson February 5, 1884 electric lampbulb Lewis Latimer March 21, 1882 elevator Alexander Miles October 11, 1867 eye protector P. Johnson November 2, 1880 fire escape ladder J. W. Winters May 7, 1878 fire extinguisher T. Marshall October 26, 1872 folding bed L. C. Bailey July 18, 1899 folding chair Brody & Surgwar June 11, 1889 fountain pen W. B. Purvis January 7, 1890 furniture caster O. A. Fisher 1878 gas mask Garrett Morgan October 13, 1914 golf tee T. Grant December 12, 1899 guitar Robert F. Flemming, Jr. March 3, 1886 hair brush Lydia O. Newman November 15, 18-- hand stamp Walter B. Purvis February 27 1883 horse shoe J. Ricks March 30, 1885 ice cream scooper A. L. Cralle February 2, 1897 improv. sugar making Norbet Rillieux December 10, 1846 insect-destroyer gun A. C. Richard February 28, 1899 ironing board Sarah Boone December 30, 1887 key chain F. J. Loudin January 9, 1894 lantern Michael C. Harvey August 19, 1884 lawn mower L. A. Burr May 19, 1889 lawn sprinkler J. W. Smith May 4, 1897 lemon squeezer J. Thomas White December 8, 1893 lock W. A. Martin July 23, 18-- lubricating cup Ellijah McCoy November 15, 1895 lunch pail James Robinson 1887 mail box Paul L. Downing October 27, 1891 mop Thomas W. Stewart June 11, 1893 motor Frederick M. Jones June 27, 1939 peanut butter George Washington Carver1896 pencil sharpener J. L. Love November 23, 1897 record player arm Joseph Hunger Dickenson January 8, 1819 refrigerator J. Standard June 14, 1891 riding saddles W. D. Davis October 6, 1895 rolling pin John W. Reed 1864 shampoo headrest C. O. Bailiff October 11, 1898 spark plug Edmond Berger February 2, 1839 stethoscope Imhotep Ancient Egypt stove T. A. Carrington July 25, 1876 straightening comb Madam C. J. Walker Approx 1905 street sweeper Charles B. Brooks March 17, 1890 phone transmitter Granville T. Woods December 2, 1884 thermostat control Frederick M. Jones February 23, 1960 traffic light Garrett Morgan November 20, 1923 tricycle M. A. Cherry May 6, 1886 typewriter Burridge & Marshman April 7, 1885
Copyright © 1996 Ronald F. Smith, P.E. All rights reserved. No part of this work may be reproduced in any form without written permission from the publisher.
