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Patent:US2071880


Patent:US 2071880
Title:Printing adding machine
Date:23.02.1937
Place:Zella-Mehlis
Country:USA
Person:Hugo Kämmel
Company:Mercedes (P) Buromaschinen-Werke AG
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Keywords:
Link to the patent office:
(without guarantee)
 US2071880 (espacenet),  US2071880 (uspto)


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