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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 |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1896936 (espacenet), US1896936 (uspto) |
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