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Harvey Hubbell II (born 1857, Connecticut) was an American inventor, entrepreneur, and industrialist. His best-known inventions are the U.S. electrical plug [ 1 ] and the pull-chain light socket . [ 2 ]
Hubbell Incorporated was founded as a proprietorship in 1888 by Harvey Hubbell II. Born in Connecticut in 1857, he was a U.S. inventor, entrepreneur, and industrialist. Hubbell's best-known inventions are the U.S. electrical plug [3] and the pull-chain light socket. [4]
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.
Harvey Hubbell's inventions [ edit ] In 1903, Harvey Hubbell filled the U.S. patent 774,250 , for a lightbulb socket adaptor and plug, also a standalone receptacle.
Harvey Hubbell patented a parallel blade plug in 1913, where the blades were equal width (U.S. patent 1,064,833). In 1916 Hubbell received a patent for a polarised version where one blade was both longer and wider than the other ( U.S. patent 1,180,648 ), in the polarised version of NEMA 1-15, introduced in the 1950s, both blades are the same ...
Inventor Harvey Hubbell II invented the electric plug outlet in Bridgeport in 1912. [13] The Frisbie Pie Company was founded and operated in Bridgeport. [14] The world's first Subway restaurant opened in the city's North End in 1965. [15]
Harvey Hubbell, inventor of the electric plug and the pull-chain light socket; Louis Latimer, inventor; Charles F. Ritchel, inventor; Gustave Whitehead, inventor; William Higinbotham, worked on the nuclear bomb, created one of the first video games Tennis For Two.
Robert H. Goddard (1882–1945), the American physicist and inventor who built and launched the world's first liquid-propellant rocket on March 16, 1926. [1] Goddard held 214 patents for his inventions and pioneering innovations in liquid-propelled, guided, and multi-stage rockets.