US2657903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Claw hammer with adjustable leverage fulcrum
Assignee: Keppel LeTourneau USA Inc
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Filing: 1950-05-12
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Granted: 1953-11-03
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Expires: 1970-05-12
Abstract
No abstract record available.
Inventors
- 👤 Ray W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:49
CPC Classifications
B; B25; B25D; B25D1/00; B25D1/04; B25D1/045; B25D2250/00; B25D2250/005
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) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |