FR1297515A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Piston seal for hydraulic mine prop
Assignee: Rheinstahl Wanheim GmbH
•
Filing: 1961-08-11
•
Granted: 1962-06-29
•
Expires: 1981-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-29 16:08
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/166; 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.