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Patent:US1528018


Patent:US 1528018
Title:Combined Typewriting and counting machine
Date:03.03.1925
Place:Zella-Mehlis
Country:USA
Person:Hamann, Christel (P)
Company:Mercedes (P) Büromaschinen- und Waffenwerk
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Link to the patent office:
(without guarantee)
 US1528018 (espacenet),  US1528018 (uspto)


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