Patent DE836407C successfully refreshed from Google Patents.
DE836407C
Expired / Lapsed
DE
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AC powered sound lamp, especially for phonetic reproduction
Assignee: Zeiss Ikon AG
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Filing: 1950-03-25
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Granted: 1952-04-10
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Expires: 1970-03-25
Abstract
No abstract record available.
Inventors
- 👤 Dr-Ing Martin Ploke
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 12:19
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/02; H01K1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE711415C
Cited
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