US2663983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corn harvester
Assignee: Allis Chalmers Corp
•
Filing: 1949-08-18
•
Granted: 1953-12-29
•
Expires: 1969-08-18
Abstract
No abstract record available.
Inventors
- 👤 Rector C Fergason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:56
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2223704A
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US2205707A
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US2238247A
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US2293757A
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US2458782A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |