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US3198357A
Expired / Lapsed
US
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Tractor-mounted implement control
Assignee: Individual
•
Filing: 1961-09-05
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Granted: 1965-08-03
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Earl E Shelby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:24
CPC Classifications
A; A01; A01C; A01C3/00; A01C3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1371344A
Cited
US2455727A
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GB624460A
Cited
US2449212A
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US2496874A
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US2718318A
Cited
US2827183A
Cited
US2832276A
Cited
US2887166A
Cited
US2868399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |