FR969693A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Self-advancing boring and surfacing device
Assignee: M LE MINISTRE de la DEFENSE NA
•
Filing: 1948-04-27
•
Granted: 1950-12-22
•
Expires: 1968-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jean Cohe
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 21:15
CPC Classifications
B; B23; B23B; B23B41/00; B23B41/12
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.