US2931451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor trailer coupling and power transmission therethrough
Assignee: Individual
•
Filing: 1958-02-17
•
Granted: 1960-04-05
•
Expires: 1978-02-17
Abstract
No abstract record available.
Inventors
- 👤 James E Hancock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:09
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; B; B60; B60K; B60K17/00; B60K17/28; B62; B62D; B62D49/00; B62D49/06; B62D49/065; B62D53/00; B62D53/02; B62D53/021; B62D53/04; B62D53/08; E02F3/6454; E02F3/6463; E02F3/653
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1445754A
Cited
US1661737A
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US1990731A
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US2091009A
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US2276573A
Cited
US2363071A
Cited
US2400239A
Cited
US2400218A
Cited
US2720417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |