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Patent:US2272478
| Patent: | US 2272478 |
| Title: | Counting device |
| Date: | 10.02.1942 |
| Place: | Barrington, IL |
| Country: | USA |
| Person: | Frederick A. Poole |
| Company: | Production Instrument (P) Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2272478 (espacenet), US2272478 (uspto) |
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