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US2981355A
Expired / Lapsed
US
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Automatic control steering unit for tractors
Assignee: Individual
•
Filing: 1958-12-01
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Granted: 1961-04-25
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Expires: 1978-12-01
Abstract
No abstract record available.
Inventors
- 👤 Frank M Rabuse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:41
CPC Classifications
A; A01; A01B; A01B69/00; A01B69/007; A01B69/008; B; B62; B62D; B62D1/00; B62D1/24; B62D1/28; B62D49/00; B62D49/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1320557A
Cited
US1682298A
Cited
US1620099A
Cited
US1868360A
Cited
US2021706A
Cited
US2496727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |