Patent US2431663A successfully refreshed from Google Patents.
US2431663A
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US
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Sickle guard
Assignee: Allis Chalmers Corp
•
Filing: 1944-09-14
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Granted: 1947-11-25
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Expires: 1964-09-14
Abstract
No abstract record available.
Inventors
- 👤 Charles J Scranton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:50
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/02; A01D34/13; A01D34/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49448; Y10T29/49451
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE448220C
Cited
GB190118464A
Cited
GB190602251A
Cited
GB191326715A
Cited
US1770709A
Cited
US2259750A
Cited
US2278393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |