![[Main Page]](/en/upload/wiki.png)
Main Page
Patent:US671109
| Patent: | US 671109 |
| Title: | Calculating Machine |
| Date: | 02.04.1901 |
| Place: | |
| Country: | USA |
| Person: | Felt, Dorr E. (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  US671109 (espacenet), US671109 (uspto) |
Aus der Patentschrift US671109