FR471602A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Stereoscopic device for viewing photographic prints on glass and paper
Assignee: MACKENSTEIN FRANC DES ETS
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Filing: 1914-05-02
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Granted: 1914-11-05
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Expires: 1934-05-02
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
2026-10-28 08:29
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/20; G02B30/34; G02B30/35
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