Patent US4147681A successfully refreshed from Google Patents.
Patent FR543554A successfully refreshed from Google Patents.
FR543554A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Viewfinder for cameras
Assignee: ARNDT APPBAU GmbH
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Filing: 1921-11-14
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Granted: 1922-09-05
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Expires: 1941-11-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 21:02
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/02
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Total Claims: 0
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References Cited (Backward Citations)
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