US2775480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dumping mechanism for semitrailers
Assignee: Individual
•
Filing: 1953-06-01
•
Granted: 1956-12-25
•
Expires: 1973-06-01
Abstract
No abstract record available.
Inventors
- 👤 James B Braswell
- 👤 Frank L Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:41
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0807; B62D53/0821; B60; B60P; B60P1/00; B60P1/04; B60P1/16; B60P1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2628126A
Cited
US2495354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |