US2944613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring release mounting for cultivator shank
Assignee: Individual
•
Filing: 1957-09-09
•
Granted: 1960-07-12
•
Expires: 1977-09-09
Abstract
No abstract record available.
Inventors
- 👤 Peter B Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:52
CPC Classifications
A; A01; A01B; A01B35/00; A01B35/20; A01B35/22; A01B61/00; A01B61/04; A01B61/044; A01B61/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US150328A
Cited
FR573924A
Cited
GB253298A
Cited
US2690111A
Cited
US2701994A
Cited
GB745484A
Cited
FR1132138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |