Patent DE728205C successfully refreshed from Google Patents.
DE728205C
Expired / Lapsed
DE
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Use of a known resonance vibration system as a display device for the image frequency
Assignee: Steatit Magnesia AG
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Filing: 1939-12-09
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Granted: 1942-11-23
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Expires: 1959-12-09
Abstract
No abstract record available.
Inventors
- 👤 Hans Metscher
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-02 15:16
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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