Patent:US1131620

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Patent:US 1131620
Title:Adding machine
Date:09.03.1915
Place:Los Angeles und Detroit
Country:USA
Person:Swalm, William E. (P)
Company:Burroughs (P) Adding Machine Comp.
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1131620 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=US1131620) (espacenet),  US1131620 (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=1131620.PN.&OS=PN/1131620&RS=PN/1131620) (uspto)


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