US2723129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for raising tractor drawn implements
Assignee: Individual
•
Filing: 1950-07-21
•
Granted: 1955-11-08
•
Expires: 1970-07-21
Abstract
No abstract record available.
Inventors
- 👤 Frank N Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:59
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/84; E02F3/841; A; A01; A01B; A01B31/00; A01B63/00; A01B63/14; A01B63/16; E02F3/7663; E02F3/7672
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US721610A
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US823544A
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US1845324A
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US2025257A
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US2059205A
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US2283744A
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US2386378A
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US2444086A
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US2598151A
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US2595289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |