Patent:US2243884
Patent: | US 2243884 |
Title: | Adding Machine |
Date: | 03.06.1941 |
Place: | Pittsburgh, Pa. |
Country: | USA |
Person: | Ritz, L. J. (P) |
Company: | Wolverine (P) Supply and Manufacturing Company |
Internal Links: | Wolverine Adder |
Keywords: | |
Link to the patent office: (without guarantee) | US2243884 (espacenet), US2243884 (uspto) |