FR1534841A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to devices for precise measurement of distances or movements by interferometry
Assignee: Centre National de la Recherche Scientifique
•
Filing: 1967-06-20
•
Granted: 1968-08-02
•
Expires: 1987-06-20
Abstract
No abstract record available.
Inventors
- 👤 Jean-Pierre Berthier
- 👤 Pierre Lostis
- 👤 Jacques Simon
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 01:45
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26; G01D5/266
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.