Patent:US100288

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Patent:US 100288
Title:Adding Machine
Date:01.03.1870
Place:
Country:USA
Person:Groesbeck, John (P)
Company:
Internal Links:Scheibenaddierer
Keywords:
Link to the patent office:
(without guarantee)
 US100288 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=US100288) (espacenet),  US100288 (http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/FPTO/srchnum.htm&r=1&f=G&l=50&s1=100288.PN.&OS=PN/100288&RS=PN/100288) (uspto)


* Bob Otnes: "The Groesbeck Adder (1870)" In: Journal of the Oughtred Society Vol.12, No. 1, Spring 2003, S. 59  US100288.pdf (http://www.rechnerlexikon.de/files/patent/US100288.pdf)

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Groesbeck (Otnes)

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