Patent US2902954A successfully refreshed from Google Patents.
US2902954A
Expired / Lapsed
US
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Driving mechanism for single and double feed hoppers
Assignee: COLE Manufacturing Co
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Filing: 1955-09-19
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Granted: 1959-09-08
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Expires: 1975-09-19
Abstract
No abstract record available.
Inventors
- 👤 Donald B Stilwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:50
CPC Classifications
A; A01; A01C; A01C19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1321293A
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US1029592A
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US1086548A
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US1185671A
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US1557856A
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US1729535A
Cited
US2167023A
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US2668638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |