Patent DE548441C successfully refreshed from Google Patents.
DE548441C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Electric lamp with multi-filament incandescent lamp and concave mirror
Assignee: Carl Zeiss SMT GmbH
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Filing: 1928-05-11
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Granted: 1932-04-12
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Expires: 1948-05-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-04 05:08
CPC Classifications
H; H01; H01K; H01K9/00; H01K9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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