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Patent:US2020282
| Patent: | US 2020282 |
| Title: | Control means for bookkeeping machines |
| Date: | 12.11.1935 |
| Place: | Rockford, IL und New York |
| Country: | USA |
| Person: | Anderson, Walter (P) |
| Company: | Underwood Elliott-Fisher (P) Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2020282 (espacenet), US2020282 (uspto) |
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