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Patent:US2236642


Patent:US 2236642
Title:Typewriting-calculating machine
Date:01.04.1941
Place:Zella-Mehlis und Benshausen
Country:USA
Person:Kämmel, Hugo Ernst
Company:Mercedes (P) Büromaschinen-Werke AG
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Link to the patent office:
(without guarantee)
 US2236642 (espacenet),  US2236642 (uspto)


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