Patent US2625869A successfully refreshed from Google Patents.
Patent US3431982A successfully refreshed from Google Patents.
US3431982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring trip release for a chisel plow
Assignee: Individual
•
Filing: 1966-05-11
•
Granted: 1969-03-11
•
Expires: 1986-05-11
Abstract
No abstract record available.
Inventors
- 👤 Terry Wassill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:25
CPC Classifications
A; A01; A01B; A01B35/00; A01B35/20; A01B35/22; A01B35/24; A01B61/00; A01B61/04; A01B61/044; A01B61/046
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA703806A
Cited
US2100499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |