Patent DE337299C successfully refreshed from Google Patents.
DE337299C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Hollow rubber ring to hold the membrane on the sound box
Assignee: MARGARETE BETHGE GEB RICHTER
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Filing: —
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Granted: 1921-05-30
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Expires: 1938-05-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-08 23:38
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/44; G11B3/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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