US2621940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support and coupling mechanism for tractor drawn vehicles
Assignee: Individual
•
Filing: 1950-03-08
•
Granted: 1952-12-16
•
Expires: 1970-03-08
Abstract
No abstract record available.
Inventors
- 👤 Robert H Gorham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:39
CPC Classifications
B; B60; B60S; B60S9/00; B60S9/02; B60S9/04; B60D; B60D1/00; B60D1/24; B60D1/36; B60D1/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1471548A
Cited
US2225157A
Cited
US2256310A
Cited
US2309618A
Cited
US2400145A
Cited
US2332326A
Cited
US2474483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |