US2803505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finger bearing retainer for feed cylinder
Assignee: Allis Chalmers Corp
•
Filing: 1953-11-03
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Granted: 1957-08-20
•
Expires: 1973-11-03
Abstract
No abstract record available.
Inventors
- 👤 Lester E Oberholtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:01
CPC Classifications
A; A01; A01D; A01D61/00; A01D61/008; A01D89/00; A01D89/001; A01D89/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US496482A
Cited
US2378258A
Cited
US2580119A
Cited
US2672905A
Cited
US2633231A
Cited
US2644284A
Cited
US2644292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |