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Patent:US1827890
| Patent: | US 1827890 |
| Title: | Calculating Machine |
| Date: | 20.10.1931 |
| Place: | |
| Country: | USA |
| Person: | Horton, Allen (P) |
| Company: | Burroughs (P) |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1827890 (espacenet), US1827890 (uspto) |
Aus der Patentschrift US1827890
- DATUM: 20.10.1931
- TITEL: Calculating machine
- PERSON: BURROUGHS ADDING MACHINE CO