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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]
Lampholder plug from 1893 GEC Ltd (London) catalogue. When electricity was first introduced into houses in the 1880s, it was primarily used for lighting. One common approach for other appliances (such as vacuum cleaners, electric fans, smoothing irons and curling tong heaters) was to connect to light bulb sockets using lampholder plugs. [1]
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.
1962 Nick Holonyak Jr. develops the first practical visible-spectrum (red) light-emitting diode. 1963 Kurt Schmidt invents the first high pressure sodium-vapor lamp. [18] 1972 M. George Craford invents the first yellow light-emitting diode. 1972 Herbert Paul Maruska and Jacques Pankove create the first violet light-emitting diode.
A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
English: L.E. Waterman Co., "Ideal" fountain pen ; Crouch & Fitzgerald, trunks, satchels, etc. In: Mid-Manhattan Picture Collection > New York City -- office buildings Published Date: 1910 Library Division: Mid-Manhattan Library / Picture Collection Specific Material Type: Prints
He developed a novel light source, the "Moore lamp", and a business that produced them in the early 1900s. The Moore lamp was the first commercially viable light-source based on gas discharges instead of incandescence; it was the predecessor to contemporary neon lighting and fluorescent lighting . [ 1 ]