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Patent:US1844564
| Patent: | US 1844564 |
| Title: | Averaging Appliance |
| Date: | 09.02.1932 |
| Place: | |
| Country: | USA |
| Person: | H. M. Davis |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1844564 (espacenet), US1844564 (uspto) |
Aus der Patentschrift US1844564