Patent US2652811A successfully refreshed from Google Patents.
US2652811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power hammer for swaging steel
Assignee: Individual
•
Filing: 1950-02-27
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Granted: 1953-09-22
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Expires: 1970-02-27
Abstract
No abstract record available.
Inventors
- 👤 Hans P Beche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:44
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/20; B21J7/46; B21J7/22; B21J7/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US59524A
Cited
US398903A
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US2494935A
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US1034863A
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US1252311A
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US1784866A
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US2366185A
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US2384641A
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US2449639A
Cited
US2470566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |