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Patent:DE294721
| Patent: | DE 294721 |
| Title: | Schreibrechenmaschine |
| Date: | 08.07.1914 |
| Place: | Brooklyn, New York, USA |
| Country: | Germany |
| Person: | Underwood, John Thomas (P) |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE294721 |
s. auch Patent:DE339320