| Ref. code: | PAT 1, Q 108 |
| Title: | Fernsprech- und -schreibwesen, Signal- und Alarmwesen |
| Creation date(s): | 12/5/1893 - 2/3/1907 |
| Number: | 29 |
| Level: | Klasse |
| Ref. code AP: | PAT 1, Q 108 |
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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=524300 |
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