FR526207A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Extraction device applicable in mines
Assignee: FRANCOIS JOSEPH BARTHELEMY BER
•
Filing: 1920-10-18
•
Granted: 1921-10-05
•
Expires: 1940-10-18
Abstract
No abstract record available.
Inventors
- 👤 Francois-Joseph-Bart Berry
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-02 00:26
CPC Classifications
B; B66; B66B; B66B17/00; B66B17/34
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.