US3053572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer dumping hitch
Assignee: Individual
•
Filing: 1960-06-24
•
Granted: 1962-09-11
•
Expires: 1980-06-24
Abstract
No abstract record available.
Inventors
- 👤 Rufus H Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:17
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/06; B60P1/08; B60D; B60D1/00; B60D1/14; B60D1/145; B60D1/155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR523267A
Cited
FR811517A
Cited
US2179586A
Cited
US2256038A
Cited
US2628733A
Cited
FI25511A
Cited
US2823817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |