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Patent:US720086
| Patent: | US 720086 |
| Title: | Calculating Machine |
| Date: | 10.01.1903 |
| Place: | |
| Country: | USA |
| Person: | Turck, Joseph Abraham Valentine (P) |
| Company: | Mechanical Accountant (P) Co |
| Internal Links: | Mechanical Accountant H |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US720086 (espacenet), US720086 (uspto) |
Aus der Patentschrift US720086