FR1107626A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Broken path magnification change device
Assignee: Anciens Etablissements Barbier Benard and Turenne SA
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Filing: 1954-06-21
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Granted: 1956-01-04
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Expires: 1974-06-21
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
2026-11-02 13:03
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/18; G02B21/20
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