US3421779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hitch device
Assignee: EARL E SHELBY
•
Filing: 1966-10-25
•
Granted: 1969-01-14
•
Expires: 1986-10-25
Abstract
No abstract record available.
Inventors
- 👤 Earl E Shelby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:31
CPC Classifications
A; A01; A01B; A01B59/00; A01B59/04; A01B59/042; A01B59/043; B; B60; B60D; B60D1/00; B60D1/24; B60D1/36; B60D1/42; B60D1/46; B60D1/465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2321516A
Cited
US2531768A
Cited
US2496474A
Cited
GB801020A
Cited
US2996127A
Cited
GB869820A
Cited
US3347564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |