Patent US2640708A successfully refreshed from Google Patents.
US2640708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination hitch
Assignee: Individual
•
Filing: 1950-05-02
•
Granted: 1953-06-02
•
Expires: 1970-05-02
Abstract
No abstract record available.
Inventors
- 👤 Frank M Fraga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:12
CPC Classifications
A; A01; A01B; A01B69/00; A01B69/003; A01B69/005; A01B59/00; A01B59/06; A01B59/066; A01B59/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1268808A
Cited
US1637811A
Cited
US1916945A
Cited
US2271533A
Cited
US2324868A
Cited
US2336410A
Cited
US2414114A
Cited
US2338334A
Cited
US2480387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |