Patent US2690197A successfully refreshed from Google Patents.
US2690197A
Expired / Lapsed
US
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Rotary comminuting and separating device
Assignee: Rex Manufacturing Co
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Filing: 1950-10-04
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Granted: 1954-09-28
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Expires: 1970-10-04
Abstract
No abstract record available.
Inventors
- 👤 George W King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:40
CPC Classifications
A; A23; A23N; A23N7/00; A23N1/00; A23N1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US372591A
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US2101620A
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US941073A
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US1262530A
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US1263834A
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FR610996A
Cited
US1750764A
Cited
US2088657A
Cited
US2477620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |