FR567541A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Method and device for reproducing sound on a light sensitive plate
Assignee: Franz Aigner
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Filing: 1923-06-18
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Granted: 1924-03-03
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Expires: 1943-06-18
Abstract
No abstract record available.
Inventors
- 👤 Franz Aigner
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 12:27
CPC Classifications
G; G11; G11B; G11B7/00
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