| Ref. code: | PAT 3, 21 a |
| Title: | Elektrische Nachrichtenübermittlung |
| Creation date(s): | 7/4/1951 - 4/14/1968 |
| Number: | 1172 |
| Level: | Klasse |
| Ref. code AP: | PAT 3, 21 a |
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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=1251664 |
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