FR834995A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to light diffusing devices for lighting devices
Assignee: WALMSLEY PATENT LAMP CO Ltd
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Filing: 1938-03-08
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Granted: 1938-12-08
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Expires: 1958-03-08
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
2026-11-01 00:15
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/40; F21S41/43
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