Patent US2546068A successfully refreshed from Google Patents.
US2546068A
Expired / Lapsed
US
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Method and apparatus for dividing pulverous material into desired fractions by means of a rotating sifting machine
Assignee: Individual
•
Filing: 1948-07-15
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Granted: 1951-03-20
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Expires: 1968-07-15
Abstract
No abstract record available.
Inventors
- 👤 Gustavsson Karl-Axel Goran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:50
CPC Classifications
B; B07; B07B; B07B7/00; B07B7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE346574C
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US325810A
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US468689A
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US468688A
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US671573A
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US958769A
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US1071870A
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US1968862A
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US1933606A
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US2003621A
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US2454798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |