US2674469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid coupling
Assignee: Individual
•
Filing: 1948-07-30
•
Granted: 1954-04-06
•
Expires: 1968-07-30
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Earle
- 👤 Carl A Covington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:20
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/22; F16L37/23; F16L55/00; F16L55/10; F16L55/1007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1587079A
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US2159242A
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US2307427A
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US2377812A
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US2386270A
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US2425500A
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US2441363A
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US2439275A
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US2461700A
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US2453741A
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US2536702A
Cited
US2471237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |