FR1249070A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements to hydraulic props for mines
Assignee: Dowty Mining Equipment Ltd
•
Filing: 1960-02-23
•
Granted: 1960-12-23
•
Expires: 1980-02-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 07:52
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/14; E21D15/44
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.