Patent US3605832A successfully refreshed from Google Patents.
US3605832A
Expired / Lapsed
US
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Hammers
Assignee: Thor Hammer Co Ltd
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Filing: 1968-10-10
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Granted: 1971-09-20
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Expires: 1988-10-10
Abstract
Abstract A HAMMER HAVING ONE OR TWO REPLACEABLE STRIKING FACES AND COMPRISING A HEAD WHICH IS OF TUBULAR FORM AND WITHIN WHICH IS FITTED A REMOVALBE INSERT, THE OR BOTH REPLACEABLE STRIKING FACES BEING CONNECTED TO THE INSERT SO THAT WHEN IN POSITION THE HEAD, INSERT AND THE OR BOTH REPLACEABLE STRIKING FACES ARE ALL HELD RIGIDLY TOGETHER. PROVISION MAY BE MADE FOR THE ACCOMMODATION OF A QUANTITY OF METAL SHOT.
Inventors
- 👤 Walter R Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:55
CPC Classifications
B; B25; B25D; B25D1/00; B25D1/02; B25D1/12; B25D2250/00; B25D2250/105; B25D2250/361
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |