US2726560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of perforating metal ingots and press for carrying the method into effect
Assignee: Individual
•
Filing: 1951-04-17
•
Granted: 1955-12-13
•
Expires: 1971-04-17
Abstract
No abstract record available.
Inventors
- 👤 Roux Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:25
CPC Classifications
B; B21; B21J; B21J9/00; B21J9/02; B21J9/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |