US2964113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined depth and draft control for tractor drawn implements
Assignee: Bendix Corp
•
Filing: 1956-02-01
•
Granted: 1960-12-13
•
Expires: 1976-02-01
Abstract
No abstract record available.
Inventors
- 👤 Frank G Presnell
- 👤 Curlett John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:40
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/56; H03F1/565; A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/111; B; B23; B23B; B23B49/00; B23B49/003; B23B49/005; H03F1/08; H03F1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB541436A
Cited
US2631514A
Cited
US2631515A
Cited
US2715863A
Cited
US2629306A
Cited
US2722873A
Cited
US2722874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |