Patent US2547258A successfully refreshed from Google Patents.
US2547258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can opener
Assignee: MINERVA HENNINGS CRAIG
•
Filing: 1947-06-02
•
Granted: 1951-04-03
•
Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 Hallett E Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:50
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1522319A
Cited
DE430764C
Cited
US1939349A
Cited
US2003931A
Cited
US2011170A
Cited
US2286303A
Cited
US2441322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |