Patent US2670845A successfully refreshed from Google Patents.
US2670845A
Expired / Lapsed
US
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Grain separating process and apparatus
Assignee: Individual
•
Filing: 1950-06-30
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Granted: 1954-03-02
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Expires: 1970-06-30
Abstract
No abstract record available.
Inventors
- 👤 Leonard W H Busack
- 👤 Marvin G Stelter
- 👤 Walter W P Stelter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:11
CPC Classifications
A; A01; A01F; A01F12/00; A01F12/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US500136A
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US27834A
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US990804A
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US1112848A
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US1258354A
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US1199599A
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US1249966A
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US1808785A
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US1785195A
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US2228228A
Cited
US2250383A
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US2441917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |