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Patent:US1896936


Patent:US 1896936
Title:Bookkeeping machine
Date:07.02.1933
Place:Essen-on-the-Ruhr
Country:USA
Person:Bruno Bornkessel Breitling, Ernst (P) Wilhelm Brauer Karl August Lehmann
Company:Fried. Krupp (P) AG
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Link to the patent office:
(without guarantee)
 US1896936 (espacenet),  US1896936 (uspto)


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