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Patent:US1505384
| Patent: | US 1505384 |
| Title: | Clear-signal mechanism for writing-adding machines |
| Date: | 19.08.1924 |
| Place: | |
| Country: | USA |
| Person: | Foothorap, Harry Arthur (P) |
| Company: | Elliott Fisher (P) |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1505384 (espacenet), US1505384 (uspto) |
Aus der Patentschrift US1505384
- DATUM: 19.08.1924
- TITEL: Clear-signal mechanism for writing-adding machines
- PERSON: ELLIOTT FISHER CO