Dacron, 1941. Inventors: J.R. Whinfield (1901-66), J.T. Dickson (England). First available 1950, marketed in USA.

Dental Plate, 1817. Inventor: Anthony A. Plantson (USA) (1774- 1837).

Dental Plate (rubber), 1855. Inventor: Charles Goodyear (USA) (1845-1921).

Diesel Engine, 1895. Inventor: Rudolf Diesel (Germany) (1858-1913). Lower pressure oil engine patent by Stuart Akroyd, 1890. Diesel’s first commercial success, Augsberg, 1897.

Differential Calculus, 1684. Inventor: Gottfried Leibniz (Germany).
Disc Brake, 1902. Inventor: Dr. F. Lanchester (England). First used on aircraft 1953 (Dunlop Rubber Co.).

Electric Battery, 1800. Inventor : Volta (Italian).

Electric Blanket, 1946. Inventor: Simmons Co., Petersburg, Virginia, USA. Thermostatic control.

Electric Cooking Utensil, 1874. Inventor : St. George Lane-Fox
(England).

Electric Fan, 1882. Inventor : Wheeler (USA).

Electric Flat Iron, 1882. Inventor: H.W. Seeley (USA), New York City.

Electric Generation (Static), 1660. Inventor: Otto von Gueriche
(Germany).

Electric Lamp, 1879. Inventor: Thomas Alva Edison (USA) (1847- 1931). First practical demonstration at Menlo Park, New Jersey.

Electric Motor (DC), 1873.
Inventor: Zenobe Gramme (Belgium) (1826-1901). Exhibited in Vienna.

Electric Motor (AC), 1888. Inventor: Nikola Tesla (USA) (1856-1943).

Electromagnet, 1824. Inventor: William Sturgeon (England) (b. 1783); improved by Joseph Henry (USA) 1831.

Electromagnetic Induction, 1831. Inventor: Michael Faraday (Great Britain); discovered previously, but not published, by Joseph Henry (United States).

Electronic Computer, 1942. Inventor: J.G. Brainerd, J.P. Eckert, J.W. Mauchly (USA). ENIAC (Electronic Numerical Integrator and Circulator), University of Pennsylvania, Philadelphia.

Elevator, 1852. Inventor: Elisha G. Otis (USA) (1811-61). Earliest elevator at N.Y.