Patent US4309769A successfully refreshed from Google Patents.
Patent FR851670A successfully refreshed from Google Patents.
FR851670A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
FR851670A - - Google Patents
Assignee: —
•
Filing: —
•
Granted: 1940-01-12
•
Expires: 1957-01-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 08:58
CPC Classifications
E; E01; E01C; E01C5/00; E01C2201/00; E01C2201/12
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.