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Patent:CH158291
| Patent: | CH 158291 |
| Title: | Rechengerät |
| Date: | 15.11.1932 |
| Place: | Zürich |
| Country: | Switzerland |
| Person: | Steiger, Max |
| Company: | |
| Internal Links: | |
| Keywords: | |
| Link to the patent office: (without guarantee) |  CH158291 |
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