FR59752E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Automatic coal extraction and / or loading device in mines
Assignee: Gewerkschaft Eisenhutte Westfalia GmbH
•
Filing: 1949-11-07
•
Granted: 1954-07-19
•
Expires: 1969-11-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 10:04
CPC Classifications
E; E21; E21C; E21C29/00; E21C29/04; E21C29/14; E21C29/16
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.