Patent FR1049920A successfully refreshed from Google Patents.
FR1049920A
Expired / Lapsed
FR
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Device ensuring the synchronized rotation of two spectacle lenses
Assignee: Jean-Rene-Auguste Prat
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Filing: 1952-01-28
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Granted: 1954-01-04
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Expires: 1972-01-28
Abstract
No abstract record available.
Inventors
- 👤 Jean-Rene-Auguste Prat
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-04 11:59
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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