Patent US2850831A successfully refreshed from Google Patents.
Patent FR63575E successfully refreshed from Google Patents.
FR63575E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to lever escapements, in particular for watch movements
Assignee: ETS JAPY FRERES
•
Filing: 1952-12-11
•
Granted: 1955-09-29
•
Expires: 1972-12-11
Abstract
No abstract record available.
Inventors
- 👤 Rene Linard
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 14:04
CPC Classifications
G; G04; G04B; G04B15/00; G04B15/06; G04B15/08
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.