Patent DE728130C successfully refreshed from Google Patents.
DE728130C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device for darkening lamps, in particular electric light bulbs, for the purpose of protection against air attacks
Assignee: AUGUST FASEL
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Filing: 1937-03-14
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Granted: 1942-11-20
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Expires: 1957-03-14
Abstract
No abstract record available.
Inventors
- 👤 August Fasel
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 13:26
CPC Classifications
F; F21; F21V; F21V1/00; F21V1/02; F21V1/08; F21V11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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