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Patent:US2181991
| Patent: | US 2181991 |
| Title: | Punching machine |
| Date: | 05.12.1939 |
| Place: | West Orange, NJ und New York |
| Country: | USA |
| Person: | Fuller, Frederick (P) |
| Company: | IBM (P) |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2181991 (espacenet), US2181991 (uspto) |
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