Robert C. Dickenson
- #1,314,130, 8/26/1970, Trolley guard
- #624,192, 5/2/1899, Reed Organ
- #915,942, 3/23/1909, Volume-controlling means for mechanical musical instruments
- #926,178, 6/29/1909, Volume-controlling means for mechanical musical instruments
- #1,028,996, 6/11/1912, Player-piano
- #1,252,411, 1/8/1918, Phonograph
Lincoln Isaiah Diuguid
- #4,539,015, 9/3/1985, Burning efficiency enhancement method
James Dixon
- #471,843, 3/29/1892, Car-coupling
Samuel Dixon Jr.
(Co-inventor Roger J. Malik)
- #4,563,773, 1/7/1986, Monolithic planar doped barrier subharmonic mixer
Lewis B. Dorcas
- #868,417, 10/15/1907, Stove
Linneaus Cuthbert Dorman
- #3,468,926, 9/23/1969, 3,5-Dihalo-4-cyanoalkoxy phenols
- #4,517,111, 5/14/1985, Absorbents for airborne formaldehyde
- #4,842,604, 6/17/1989, Composites of unsintered calcium phosphates and synthetic biodegradable polymers useful as hard tissue prosthetics
Osbourn Dorsey
- #210,764 12/10/1878, Door-holding device
- #535,820, 3/19/1895, Device for applying coloring liquids to sides of soles or heels of shoes
- #537,442, 4/16/1895, Machine for embossing photographs
- #537,968, 4/23/1895, Photographic print washer
- #629,315, 7/18/1899, Hose leak stop
William Douglass
- #789,010, 5/2/1905, Self-binding harvester
- #789,120, 5/2/1905, Band-twister
- #789,122, 5/2/1905, Carrier chain
Gertrude E. Downing & William P. Desjardin
- #3,715,772, 2/13/1973, Reciprocating corner and baseboard cleaning auxiliary attachment for rotary floor treatment
machines
Philip B. Downing
- #430,118, 6/17/1890, Street railway switch
- #462,092, 10/27/1891, Letter Box
- #462,093, 10/27/1891, Letter Box
James Doyle
- #659,057, 10/2/1900, Serving apparatus for dining rooms
- #1,019,137, 3/5/1912, Automatic serving system
- #1,098,788, 6/1/1914, Server for automatic serving systems
Cortland Otis Dugger
- #3,595,803, 7/27/1971, Method for growing single oxide crystals "Duggerite"
- #3,624,547, 11/30/1971, Solid-state laser produced by a chemical reaction between a germinate and an oxide dopant
- #3,933,573, 1/20/1976, Aluminum nitride single crystal growth from a molten mixture with calcium nitride
James Henry Dunnington
- #578,979, 3/16/1897, Horse detacher
Charles A. Dyer
- #3,732,632, 5/15/1973, Teaching aid
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