Patent US2772896A successfully refreshed from Google Patents.
US2772896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-coupling tractor hitch member opened by complementary hitch member
Assignee: Individual
•
Filing: 1954-04-14
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Granted: 1956-12-04
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Expires: 1974-04-14
Abstract
No abstract record available.
Inventors
- 👤 Ronald J Kemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:34
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/26; B60D1/01; B60D1/04
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |