US3250333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Row marker
Assignee: Individual
•
Filing: 1964-04-13
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Granted: 1966-05-10
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Leon E Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:43
CPC Classifications
A; A01; A01B; A01B69/00; A01B69/02; A01B69/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A ROW MARKER APPARATUS ADAPTED TO BE USED WITH A TRACTOR OF THE TYPE HAVING A HYDRAULIC SYSTEM AND HAVING A MOVABLE TOOL BAR CARRIED BY THE TRACTOR FOR MOVEMENT OVER THE GROUND, SAID ROW MARKER APPARATUS COMPRISING A PAIR OF FRAMES, A PAIR OF MEANS ATTACHED TO SAID PAIR OF FRAMES FOR RESPECTIVELY MOUNTING SAID FRAMES ON SAID TOOL BAR IN WIDELY SPACED RELATIONSHIP AT OPPOSITE ENDS OF SAID TOOL BAR, A PAIR OF MARKING ARMS, A PAIR OF EARTH-MARKING ELEMENTS RESPECTIVELY MOUNTED ON THE END OF SAID ARMS, A PAIR OF MEANS RESPECTIVELY PIVOTALLY MOUNTING SAID ARMS ON SAID FRAMES FOR INDEPENDENT PIVOT OF SAID
Claim 2
Dependent Claim
107 words
A ROW MARKER APPARATUS ADAPTED TO BE USED WITH A TRACTOR OF THE TYPE HAVING A HYDRAULIC SYSTEM AND HAVING A MOVABLE TOOL BAR CARRIED BY THE TRACTOR FOR MOVEMENT OVER THE GROUND, SAID ROW MARKER APPARATUS COMPRISING A PAIR OF FRAMES, A PAIR OF MEANS ATTACHED TO SAID PAIR OF FRAMES FOR RESPECTIVELY MOUNTING SAID FRAMES ON SAID TOOL BAR IN WIDELY SPACED RELATIONSHIP AT OPPOSITE ENDS OF SAID TOOL BAR, A PAIR OF MARKING ARMS, A PAIR OF EARTH-MARKING ELEMENTS RESPECTIVELY MOUNTED ON THE END OF SAID ARMS, A PAIR OF MEANS RESPECTIVELY PIVOTALLY MOUNTING SAID ARMS ON SAID FRAMES FOR INDEPENDENT PIVOT OF SAID
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |