US2784657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor drawn agricultural implement
Assignee: Individual
•
Filing: 1953-12-14
•
Granted: 1957-03-12
•
Expires: 1973-12-14
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Newkirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:00
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22627E
Cited
US2247534A
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US2322342A
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US2320624A
Cited
US2341807A
Cited
US2440550A
Cited
US2622349A
Cited
US2561032A
Cited
US2583897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |