US3130762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hammer with detachable striking head faces
Assignee: Individual
•
Filing: 1961-06-21
•
Granted: 1964-04-28
•
Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Henry K Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:56
CPC Classifications
B; B25; B25D; B25D1/00; B25D1/02; B25D1/12; B25D2222/00; B25D2222/21; B25D2222/39; B25D2222/42; B25D2222/54; B25D2222/57; B25D2250/00; B25D2250/105; B25D2250/361
Claims Analysis
Total Claims: 0
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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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |