FR15622E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Periscope perfected
Assignee: ALEXANDRE DUFOUR
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Filing: 1911-05-31
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Granted: 1912-08-16
•
Expires: 1931-05-31
Abstract
No abstract record available.
Inventors
- 👤 Alexandre Dufour
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 12:43
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/02; G02B23/08
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References Cited (Backward Citations)
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