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Patent:US1396612
| Patent: | US 1396612 |
| Title: | Zero setting mechanism |
| Date: | 08.11.1921 |
| Place: | Des Moines, IA und New York |
| Country: | USA |
| Person: | White, Nelson (P) |
| Company: | Monroe (P) Calculating Machine Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1396612 (espacenet), US1396612 (uspto) |
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