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US2936983A
Expired / Lapsed
US
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Semitrailer king-pin locking and supporting means
Assignee: Motors Liquidation Co
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Filing: 1954-10-04
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Granted: 1960-05-17
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Expires: 1974-10-04
Abstract
No abstract record available.
Inventors
- 👤 Markestein John
- 👤 Jr Matt John Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:46
CPC Classifications
B; B60; B60P; B60P7/00; B60P7/06; B61; B61D; B61D45/00; B61D45/001; B61D45/004; B61D45/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1380490A
Cited
US1623427A
Cited
US2170581A
Cited
US2204667A
Cited
US2099288A
Cited
US2541209A
Cited
US2709969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |