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Patent:DE563907
| Patent: | DE 563907 |
| Title: | Rechenmaschine |
| Date: | 03.07.1928 |
| Place: | London, England |
| Country: | Germany |
| Person: | Debenham, Ernest Ridley (P), Rowley, Charles Donovan (P), Isherwood, Harold (P) |
| Company: | |
| Internal Links: | Multiplikation; Teilprodukte, Multiplikationskörper |
| Keywords: | |
| Link to the patent office: (without guarantee) |  DE563907 |
11.11.1932
DE563907 Fig. 1 - 4