FR656841A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Drill bit for cold drilling very hard metals
Assignee: Jules-Ernest Jacquet
•
Filing: 1928-06-30
•
Granted: 1929-05-14
•
Expires: 1948-06-30
Abstract
No abstract record available.
Inventors
- 👤 Jules-Ernest Jacquet
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 15:39
CPC Classifications
B; B23; B23B; B23B51/00; B23B2251/00; B23B2251/14; B23B2251/48; B23B2251/56
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.