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Sir Joseph Wilson Swan FRS (31 October 1828 – 27 May 1914) was an English physicist, chemist, and inventor.He is known as an independent early developer of a successful incandescent light bulb, and is the person responsible for developing and supplying the first incandescent lights used to illuminate homes and public buildings, including the Savoy Theatre, London, in 1881.
Matthew Evans is one of two Canadians who developed and patented an incandescent light bulb, on July 24, 1874, five years before Thomas Alva Edison's U.S. patent on the device. Evans, from Toronto, Ontario, and his friend Henry Woodward, made the light bulb by sending electricity through a filament made of carbon. Evans was a hotelier.
Henry Woodward was a Canadian inventor and a major pioneer in the development of the incandescent lamp. [1] He was born in 1832. On July 24, 1874, Woodward and his partner, Mathew Evans, a hotel keeper, filed a Canadian patent application on an electric light bulb. [2] [3] It was granted on August 3, 1874, as Canadian patent number 3,738. [4]
William Edward Sawyer (c. 1850 – May 15, 1883) [1] was an American inventor whose contribution was primarily in the field of electric engineering and electric lighting. His primary inventions included: Telegraph apparatus for cable use (March 31, 1874) Automatic and autographic telegraph and circuit (February 2, 1875)
Lewis Howard Latimer (September 4, 1848 – December 11, 1928) was an American inventor and patent draftsman. His inventions included an evaporative air conditioner, an improved process for manufacturing carbon filaments for electric light bulbs, and an improved toilet system for railroad cars.
Franjo Hanaman (seated) and Alexander Just. Franjo Hanaman (June 30, 1878 – January 23, 1941) was a Croatian inventor, engineer, and chemist, who gained world recognition for inventing the world's first applied electric light-bulb with a metal filament with his assistant Alexander Just, independently of his contemporaries.
Alexander Nikolayevich Lodygin, known after immigration to US as Alexandre de Lodyguine (Russian: Александр Николаевич Лодыгин; October 6, 1847 – March 16, 1923) was a Russian electrical engineer and inventor, one of the inventors of the incandescent light bulb.
Alexander Just A Just–Hanaman light-bulb, Budapest, 1906 Alexander Just as a soldier during World War I. Alexander Friedrich Just (12 April 1874, in Bremen – 30 May 1937, in Budapest) was an Austro-Hungarian [1] chemist and inventor. [2] Later, in Hungary he used the name Just Sándor Frigyes.