FR824591A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Film tape for mechanical vibration recording, and method of manufacturing this tape
Assignee: Koninklijke Philips NV
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Filing: 1937-07-21
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Granted: 1938-02-11
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Expires: 1957-07-21
Abstract
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Inventors
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 16:23
CPC Classifications
G; G11; G11B; G11B11/00
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