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Patent:US2350979
| Patent: | US 2350979 |
| Title: | Calculating machine |
| Date: | 13.06.1944 |
| Place: | Oakland, CA |
| Country: | USA |
| Person: | Avery, Harold (P) De Witt M. Grimm Frederick N. Schwend |
| Company: | Marchant (P) Calculating Machine Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2350979 (espacenet), US2350979 (uspto) |
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