US2580532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor hitch for agricultural implements
Assignee: Individual
•
Filing: 1950-05-12
•
Granted: 1952-01-01
•
Expires: 1970-05-12
Abstract
No abstract record available.
Inventors
- 👤 Richard L Dugger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:43
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/06; B62D49/065; A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/14; A01B63/24; A01B63/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22912E
Cited
US2324840A
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US2356231A
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US2309750A
Cited
US2351473A
Cited
US2395322A
Cited
US2445145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |