US3464719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bolster locking head for securing semi-trailer to tractor fifth wheel
Assignee: Fruehauf Corp
•
Filing: 1967-07-13
•
Granted: 1969-09-02
•
Expires: 1987-07-13
Abstract
No abstract record available.
Inventors
- 👤 Keith W Tantlinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:26
CPC Classifications
B; B60; B60P; B60P7/00; B60P7/06; B60P7/13; B60P7/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1621592A
Cited
US2148901A
Cited
US3125965A
Cited
US3111341A
Cited
US3129672A
Cited
US3278198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |