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Patent:US1503171
| Patent: | US 1503171 |
| Title: | Adding Machine |
| Date: | 29.07.1924 |
| Place: | |
| Country: | USA |
| Person: | Stinson Harold S |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US1503171 (espacenet), US1503171 (uspto) |
Aus der Patentschrift US1503171
- DATUM: 29.07.1924
- TITEL: Adding machine