File:Swedish patent 44004 Kopplingsanordning för automatiska eller halvautomatiska telefonanläggningar.pdf
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| Description | Swedish patent 44004: Kopplingsanordning för automatiska eller halvautomatiska telefonanläggningar |
| Date | |
| Source | Digitized by NordiskaPatent.se |
| Author | G.A. Betulander, Södertörns villastad; co-inventors: N.G. Palmgren, O. Grahn |
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This document is in the public domain in Sweden because it is a reproduction of a law, decision, or report issued by a Swedish public authority (svensk myndighet) or an official translation of such a text. Lag (1960:729) om upphovsrätt till litterära och konstnärliga verk 9 §. This does not include maps, visual art, musical works, or poetic works. |  |
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| current | 01:42, 10 April 2010 |  | 1,239 × 1,752, 7 pages (794 KB) | LA2 (talk | contribs) | == Summary == {{Information |Description=Swedish patent 44004: Kopplingsanordning för automatiska eller halvautomatiska telefonanläggningar |Source=Digitized by [http://nordiskapatent.se/ NordiskaPatent.se] |Date=August 21, 1914 |Author=G.A. Betulander, |
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