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Patent:US2339089
| Patent: | US 2339089 |
| Title: | Centralizing Device |
| Date: | 11.01.1944 |
| Place: | |
| Country: | USA |
| Person: | M. D. Martin et al |
| Company: | Marchant (P) Calculating Machine Co., CA |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2339089 (espacenet), US2339089 (uspto) |
Aus der Patentschrift US2339089
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