Patent US3376574A successfully refreshed from Google Patents.
US3376574A
Expired / Lapsed
US
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Guidance system for ploughs
Assignee: Rank Organization Ltd
•
Filing: 1967-01-24
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Granted: 1968-04-02
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Expires: 1987-01-24
Abstract
No abstract record available.
Inventors
- 👤 Gosling William Rober Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:39
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; E02F5/14; E02F5/145; G; G01; G01C; G01C15/00; G01C15/002; G05; G05D; G05D1/00; G05D1/02; G05D1/021; G05D1/0231
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) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |