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Patent:US987150
| Patent: | US 987150 |
| Title: | Computing-machine |
| Date: | 21.03.1911 |
| Place: | New York |
| Country: | USA |
| Person: | Marshall, Holmes |
| Company: | Addograph (P) Mfg. Comp. |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US987150 (espacenet), US987150 (uspto) |
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