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	Browse inventors by last name: Daimler , Gottleib Design of automobile and motorcycle engines Damadian , Raymond V. MRI Raymond Damadian invented the magnetic resonance imaging (MRI) scanner . . . . Daugman , John G. Iris Recognition Algorithm Davies , Donald Watts Digital Packet Switching de Mestral , George Velcro In 1955, George de Mestral patented VELCRO® hook and loop fasteners, a . . . . Dean , Mark Peripherals Mark Dean and his co-inventor Dennis Moeller created a microcomputer s . . . . Deere , John Plows John Deere developed the first American cast steel plow. The implemen . . . . Deforest , Lee Radio In the early 1900s, the great requirement for further development of r . . . . Dennard , Robert DRAM Robert Heath Dennard invented one-transistor Dynamic Random Access Mem . . . . Devol , George Industrial Robot In the 1930s, George Devol began realizing the value of factory automa . . . . Dick , Albert B. Duplicating Machine Albert Dick, who founded the ABDick Company in 1883, invented the mime . . . . Diesel , Rudolf Internal-Combustion Engine Though best known for his invention of the pressure-ignited heat engin . . . . Diffie , Whitfield Public-Key Cryptography In 1976, Whitfield Diffie, Martin Hellman, and Ralph Merkle developed . . . . Disney , Walt Multiplane Camera Seldom has an individual become so intrinsically linked to a concept a . . . . Djerassi , Carl Oral Contraceptives Carl Djerassi is recognized for his breakthroughs in chemistry and for . . . . Dolby , Ray Dolby Noise Reduction Ray Dolby revolutionized the audio industry in the 1960s by inventing . . . . Dow , Herbert Henry Bromine Extraction Herbert Henry Dow, founder of the . . . . Draper , Charles Stark Stabilizing Gyroscpic Aeronautical engineer and university professor Charles Stark Draper de . . . . Drew , Richard Gurley Adhesive Tape Drinker , Philip Respiration Apparatus Dunlop , John Pneumatic tire for cycles Durant , Graham John Tagamet - Cimetidine Graham J. Durant, John Colin Emmett, and C. Robin Ganellin led the Smi . . . .