FR907408A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Spring hammer
Assignee: Joseph-Andre Christen
•
Filing: 1943-12-29
•
Granted: 1946-03-12
•
Expires: 1963-12-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph-Andre Christen
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 00:46
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/02; B21J7/10; B21J7/12
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.