Patent DE688797C successfully refreshed from Google Patents.
DE688797C
Expired / Lapsed
DE
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Optical system for light signal devices
Assignee: Siemens APP und Maschinen GmbH
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Filing: 1936-07-22
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Granted: 1940-03-02
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Expires: 1956-07-22
Abstract
No abstract record available.
Inventors
- 👤 Dipl-Ing Wolfram Albrecht
- 👤 Guenter Klemt
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-02 19:53
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/08; G02B17/0896; G02B17/0804; G02B17/0808; G02B17/0856
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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