US2469579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift mechanism for disk plows
Assignee: INT HARVESTER CANADA
•
Filing: 1945-10-08
•
Granted: 1949-05-10
•
Expires: 1965-10-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Scarlett
- 👤 Howell N James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:22
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08; A01B63/00; A01B63/14; A01B63/16; A01B63/166
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1472637A
Cited
US2351369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |