Patent:US1131620
Patent: | US 1131620 |
Title: | Adding machine |
Date: | 09.03.1915 |
Place: | Los Angeles und Detroit |
Country: | USA |
Person: | Swalm, William E. (P) |
Company: | Burroughs (P) Adding Machine Comp. |
Internal Links: | |
Keywords: | |
Link to the patent office: (without guarantee) | ![]() ![]() |
(There is currently no text in this page)