Patent FR1167336A successfully refreshed from Google Patents.
FR1167336A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Optical filters
Assignee: Centre National de la Recherche Scientifique
•
Filing: 1957-02-28
•
Granted: 1958-11-24
•
Expires: 1977-02-28
Abstract
No abstract record available.
Inventors
- 👤 A Vassy
- 👤 E Vassy
- 👤 B Leroy
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/26; G02B5/265
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.