Patent US3391949A successfully refreshed from Google Patents.
US3391949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor hitch converter
Assignee: Individual
•
Filing: 1966-03-23
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Granted: 1968-07-09
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Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 Paul D Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:18
CPC Classifications
A; A01; A01B; A01B59/00; A01B59/06; A01B59/061; A01B59/063; A01B59/062; B; B60; B60D; B60D1/00; B60D1/24; B60D1/42; B60D1/46; B60D1/465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2341807A
Cited
US2786589A
Cited
US2952323A
Cited
DE1107986B
Cited
DE1172464B
Cited
US3312478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |