FR1094480A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Method and devices for removing coal, ore or other layers
Assignee: Jean-Antoine-Adolph Lanternier
•
Filing: 1953-11-21
•
Granted: 1955-05-20
•
Expires: 1973-11-21
Abstract
No abstract record available.
Inventors
- 👤 Jean-Antoine-Adolph Lanternier
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 00:48
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/20; E21C27/46
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.