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Patent:US3415447
| Patent: | US 3415447 |
| Title: | Computing machine |
| Date: | 10.12.1968 |
| Place: | Wernau (Neckar) |
| Country: | USA |
| Person: | Heyer, Arno (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US3415447 (espacenet), US3415447 (uspto) |
Siehe auch Patent:SE319634, Patent:DE2241990 und Gebrauchsmuster Patent:DE1930997U
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