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Patent:US2971268
| Patent: | US 2971268 |
| Title: | Quiz Game Devices |
| Date: | 14.02.1961 |
| Place: | |
| Country: | USA |
| Person: | H. Zimmerman |
| Company: | |
| Internal Links: | Lehrmittel |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US2971268 (espacenet), US2971268 (uspto) |
Aus der Patentschrift US2971268
- DATUM: 14.02.1961
- TITEL: Quiz game devices