Patent:US1881852

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Patent:US 1881852
Title:Calculating machine
Date:11.10.1932
Place:Detroit
Country:USA
Person:Frederick Otto Mueller
Company:Burroughs (P) Adding Machine Comp.
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Link to the patent office:
(without guarantee)
 US1881852 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=US1881852) (espacenet),  US1881852 (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=1881852.PN.&OS=PN/1881852&RS=PN/1881852) (uspto)


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