US2979140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moldboard plow frame construction
Assignee: Individual
•
Filing: 1957-01-28
•
Granted: 1961-04-11
•
Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Ross B Mckenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:34
CPC Classifications
A; A01; A01B; A01B15/00; A01B15/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US17591A
Cited
US179094A
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US717455A
Cited
US1655351A
Cited
US2132166A
Cited
US2552549A
Cited
US2625089A
Cited
US2582595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |