Patent US2771192A successfully refreshed from Google Patents.
US2771192A
Expired / Lapsed
US
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Grain cleaning apparatus
Assignee: IDEAL GRAIN CLEANER Co
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Filing: 1951-06-30
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Granted: 1956-11-20
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Expires: 1971-06-30
Abstract
No abstract record available.
Inventors
- 👤 Harry A Lindahl
- 👤 Strandberg Karl Gustaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:47
CPC Classifications
B; B02; B02B; B02B1/00; B02B1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US68598A
Cited
US1705302A
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US1728238A
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US1912375A
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US1931074A
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US2015400A
Cited
US2135343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |