Patent:US1644559

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Patent:US 1644559
Title:Adding Machine
Date:04.10.1927
Place:Kansas City
Country:USA
Person:Harry Donald Betz
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US1644559 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=US1644559) (espacenet),  US1644559 (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=1644559.PN.&OS=PN/1644559&RS=PN/1644559) (uspto)


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