US2846240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil spring detent coupling with differentially tapered operating surfaces
Assignee: Individual
•
Filing: 1957-07-23
•
Granted: 1958-08-05
•
Expires: 1977-07-23
Abstract
No abstract record available.
Inventors
- 👤 Walter O Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:03
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/0845
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1754639A
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US2069377A
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US2111956A
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US2184376A
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US2225610A
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US2259453A
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US2587810A
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US2631872A
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US2709092A
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US2693378A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |