Patent US2893278A successfully refreshed from Google Patents.
US2893278A
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Multiple stage, predetermined torque release apparatus for tightening threaded fastening elements
Assignee: ADELE M STEVENS
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Filing: 1952-10-20
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Granted: 1959-07-07
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Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Henry T M Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:17
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/0078; B25B23/14; B25B23/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1812816A
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US2202402A
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US2292146A
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US2569244A
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US2484364A
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US2457969A
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US2691314A
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US2702489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |