| Ref. code: | PAT 3, 21 a 1 |
| Title: | Elektrische Telegraphie |
| Creation date(s): | 7/4/1951 - 11/17/1967 |
| Number: | 365 |
| Level: | Klasse |
| Ref. code AP: | PAT 3, 21 a 1 |
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Usage |
| Permission required: | [Leer] |
| Physical Usability: | Uneingeschränkt |
| Accessibility: | [Leer] |
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URL for this unit of description |
| URL: |  https://suche.staatsarchiv.djiktzh.ch/detail.aspx?ID=1251667 |
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