DK61871C
Expired / Lapsed
DK
⏱️ 0.0 years remaining
Sound reproducing apparatus with oscillating diaphragm.
Assignee: Otto Ring
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Filing: 1942-05-29
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Granted: 1944-02-07
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Expires: 1962-05-29
Abstract
No abstract record available.
Inventors
- 👤 Otto Ring
Bibliographic Details
Application Number
—
Jurisdiction
DK
Data Source
google_patents
Last Synchronized
2026-11-06 11:16
CPC Classifications
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