US2639160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer hitch
Assignee: Individual
•
Filing: 1950-01-23
•
Granted: 1953-05-19
•
Expires: 1970-01-23
Abstract
No abstract record available.
Inventors
- 👤 Robert H Studebaker
- 👤 Studebaker David Emmert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:40
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/48; B60D1/52; B60D1/54; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17923; Y10T403/00; Y10T403/70; Y10T403/7016; Y10T403/7062; Y10T403/7064; Y10T403/7066; Y10T403/7071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1475257A
Cited
US2208796A
Cited
US2309249A
Cited
US2309850A
Cited
US2425838A
Cited
US2484751A
Cited
US2569086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |