US3423935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control system for tractor drawn implement
Assignee: Weatherhead Co
•
Filing: 1966-12-30
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Granted: 1969-01-28
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Expires: 1986-12-30
Abstract
No abstract record available.
Inventors
- 👤 Tadeusz Budzich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:18
CPC Classifications
F; F15; F15B; F15B11/00; A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/1006; A01B63/1013; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/315; F15B2211/31523; F15B2211/31529; F15B2211/32; F15B2211/321; F15B2211/324; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1836740A
Cited
US2726680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |