US3432184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power actuated tractor hitch
Assignee: United States Steel Corp
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Filing: 1967-07-10
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Granted: 1969-03-11
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Expires: 1987-07-10
Abstract
No abstract record available.
Inventors
- 👤 Robert H Tweedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:25
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/111; A01B59/00; A01B59/002; A01B59/004; A01B59/06; A01B59/061; A01B59/062; A01B59/066; A01B59/068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |