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US3480085A
Expired / Lapsed
US
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Disk harrow
Assignee: Case LLC
•
Filing: 1967-04-12
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Granted: 1969-11-25
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Expires: 1987-04-12
Abstract
No abstract record available.
Inventors
- 👤 Lawrence E Tilbury
- 👤 Steven E Maple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:20
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08; A01B21/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US944415A
Cited
US2765609A
Cited
US2797542A
Cited
US2897905A
Cited
US2970656A
Cited
US3131775A
Cited
US3193023A
Cited
US3362484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |