About: Otis King

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Otis Carter Formby King (1876–1944) was an electrical engineer in London who invented and produced a cylindrical slide rule with helical scales, primarily for business uses initially. The product was named Otis King's Patent Calculator, and was manufactured and sold by Carbic Ltd. in London from about 1922 to about 1972.

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rdfs:label	Otis King (en)
rdfs:comment	Otis Carter Formby King (1876–1944) was an electrical engineer in London who invented and produced a cylindrical slide rule with helical scales, primarily for business uses initially. The product was named Otis King's Patent Calculator, and was manufactured and sold by Carbic Ltd. in London from about 1922 to about 1972. (en)
foaf:depiction
dcterms:subject	1876 births 1944 deaths Mechanical calculators Logarithms Analog computers English inventions English inventors
Wikipage page ID	4962961 (xsd:integer)
Wikipage revision ID	1028086129 (xsd:integer)
Link from a Wikipage to another Wikipage	1876 births Geniac Logarithmic scale Slide rule 1944 deaths Mechanical calculators Logarithms Analog computers English inventions English inventors Bygrave slide rule Fuller's cylindrical slide rule
Link from a Wikipage to an external page	http://www.svpal.org/~dickel/OK/OtisKing.html http://www.hpmuseum.org/srcyl.htm http://v3.espacenet.com/publicationDetails/biblio%3FCC=FR&NR=569985A&KC=A&FT=D&date=19240422&DB=EPODOC&locale=en_EP http://v3.espacenet.com/publicationDetails/originalDocument%3FCC=CA&NR=241076A&KC=A&FT=D&date=19240624&DB=EPODOC&locale=en_EP http://v3.espacenet.com/publicationDetails/originalDocument%3FCC=CA&NR=241986A&KC=A&FT=D&date=19240805&DB=EPODOC&locale=en_EP http://v3.espacenet.com/publicationDetails/originalDocument%3FCC=DE&NR=418814C&KC=C&FT=D&date=19250915&DB=EPODOC&locale=en_EP http://v3.espacenet.com/publicationDetails/originalDocument%3FCC=FR&NR=576616A&KC=A&FT=D&date=19240823&DB=EPODOC&locale=en_EP http://v3.espacenet.com/publicationDetails/originalDocument%3FCC=GB&NR=183723A&KC=A&FT=D&date=19220803&DB=EPODOC&locale=en_EP http://v3.espacenet.com/publicationDetails/originalDocument%3FCC=GB&NR=207762A&KC=A&FT=D&date=19231204&DB=EPODOC&locale=en_EP http://v3.espacenet.com/publicationDetails/originalDocument%3FCC=GB&NR=207856A&KC=A&FT=D&date=19231204&DB=EPODOC&locale=en_EP http://v3.espacenet.com/publicationDetails/originalDocument%3FCC=US&NR=1645009A&KC=A&FT=D&date=19271011&DB=EPODOC&locale=en_EP
sameAs	Otis King Otis King Otis King Otis King
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thumbnail	wiki-commons:Special:FilePath/OtisKing_ModelK.jpg?width=300
has abstract	Otis Carter Formby King (1876–1944) was an electrical engineer in London who invented and produced a cylindrical slide rule with helical scales, primarily for business uses initially. The product was named Otis King's Patent Calculator, and was manufactured and sold by Carbic Ltd. in London from about 1922 to about 1972. With a log-scale decade length of 66 inches, the Otis King calculator should be about a full digit more accurate than a 6-inch pocket slide rule. But due to inaccuracies in tic-mark placement, some portions of its scales will read off by more than they should. For example, a reading of 4.630 might represent an answer of 4.632, or almost one part in 2000 error, when it should be accurate to one part in 6000 (66"/6000 = 0.011" estimated interpolation accuracy). The Geniac brand cylindrical slide rule sold by Oliver Garfield Company in New York was initially a relabelled Otis King; Garfield later made his own, probably unauthorized version of the Otis King (around 1959). The UK patents covering the mechanical device(s) would have expired in about 1941–1942 (i.e. 20 years after filing of the patent) but copyright in the drawings would typically only expire 70 years after the author's death. (en)
gold:hypernym	Grocer
prov:wasDerivedFrom	wikipedia-en:Otis_King?oldid=1028086129&ns=0
page length (characters) of wiki page	3854 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Otis_King
is Link from a Wikipage to another Wikipage of	Index of logarithm articles Otis (given name) Slide rule John Charles Bond-Andrews Otis King's Patent Calculator
is Wikipage redirect of	Otis King's Patent Calculator
is foaf:primaryTopic of	wikipedia-en:Otis_King

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