Patent DE699472C successfully refreshed from Google Patents.
DE699472C
Expired / Lapsed
DE
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Optical system for light signal devices
Assignee: Siemens APP und Maschinen GmbH
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Filing: 1939-06-21
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Granted: 1940-11-29
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Expires: 1959-06-21
Abstract
No abstract record available.
Inventors
- 👤 Dipl-Ing Wolfram Albrecht
- 👤 Dr-Ing Walter Stroeble
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-02 13:10
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/08; G02B17/0856; G02B17/0804; G02B17/0808
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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