US3380758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air lift fifth wheel control system
Assignee: OLE GRANNING TRAILER SERVICE Inc
•
Filing: 1966-03-02
•
Granted: 1968-04-30
•
Expires: 1986-03-02
Abstract
No abstract record available.
Inventors
- 👤 Granning Ole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:07
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0807; B62D53/0821
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733931A
Cited
US2903256A
Cited
US2928684A
Cited
US2919930A
Cited
US3074739A
Cited
US3214185A
Cited
FR1324996A
Cited
US3253840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |