Horloges électriques et applications diverses : publication complète des classes 1 à 40 : 555 exposés d'invention, 5 numéros de brevets inscrits à double.

Contributor(s): Material type: TextTextSeries: Bibliothèque des inventions horlogères ; J. XI.Publisher: Saint-Imier : [Robert Berthoud], 1944Description: 139 pages : illustrationsContent type:
  • text
Media type:
  • unmediated
Carrier type:
  • volume
Subject(s):

31560000015046 9513

Complete chronological listing of summaries of all patents filed relating to electrical horology in Switzerland 1889 to 1942, listing 555 patents (No index by name). Extract from a much larger, multivolume series by the same author on all horological patents.

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