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Lewis Edson Waterman (November 20, 1836 – May 1, 1901) was an American inventor. He held multiple fountain pen patents and was the founder of the Waterman Pen Company . His entry into fountain pen manufacturing has only recently been properly researched.
Lewis Waterman, an insurance salesman in New York City, invented the first truly functional fountain pen in the early 1880s. An apocryphal story is that a typical pen of the day leaked all over a contract he had prepared for a large policy, and by the time Waterman returned with a new document, his client had signed with someone else. [2]
German inventor Karl Ferdinand Braun invented cathode ray oscilloscope (CRO). 1901: First transatlantic radio transmission by Guglielmo Marconi 1901: American engineer Peter Cooper Hewitt invented the Fluorescent lamp. 1904: English engineer John Ambrose Fleming invented the diode. 1906: American inventor Lee de Forest invented the triode. 1908
U.S. patent 774,250.The first US power plug and socket dated 1904. Several early American electrical plug and socket arrangements were invented by Harvey Hubbell.On 26 February 1903 he filed two patent applications featuring 2-pin plugs and adaptors for using his plugs with existing designs of lamp sockets and wall receptacles.
1875 Henry Woodward patents an electric light bulb. 1876 Pavel Yablochkov invents the Yablochkov candle, the first practical carbon arc lamp, for public street lighting in Paris. 1879 (About Christmas time) Col. R. E. Crompton illuminated his home in Porchester Gardens, using a primary battery of Grove Cells, then a generator which was better ...
The engine was a steam engine converted to burn gaseous fuel and thus pushed in both directions. The fuel mixture was not compressed before ignition (a system invented in 1801 by Philippe LeBon who developed the use of illuminating gas to light Paris), and the engine was quiet but inefficient, [4] with a power stroke at each end of the cylinder ...
Device for Connection of Luminaires (DCL) is a European standard for ceiling light fixtures introduced in 2005 and refined in 2009. It uses 6 ampere. DCL must carry the CE marking as per the Low Voltage Directive. DCL is only allowed to be installed with ground. Example of DCL socket.
A light fixture (US English), light fitting (UK English), or luminaire is an electrical lighting device containing one or more light sources, such as lamps, and all the accessory components required for its operation to provide illumination to the environment. [1] All light fixtures have a fixture body and one or more lamps.