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Patent:NO55409
| Patent: | NO 55409 |
| Title: | Trykkeværk, særlig i forbindelse med tabelleringsmaskin for gjennemhullede registerkort |
| Date: | 01.01.1935 |
| Place: | |
| Country: | Norway |
| Person: | Knutsen, K.A. |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  NO55409 |
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