Patent:US2724551

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Patent:US 2724551
Title:Constant device for calculating machine
Date:22.11.1955
Place:Trumbull und New York
Country:USA
Person:Anderson, Walter (P)
Company:Underwood (P) Corp.
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Keywords:
Link to the patent office:
(without guarantee)
 US2724551 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=US2724551) (espacenet),  US2724551 (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=2724551.PN.&OS=PN/2724551&RS=PN/2724551) (uspto)


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