Patent US2664201A successfully refreshed from Google Patents.
US2664201A
Expired / Lapsed
US
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Flour sifter vibrated by electric motor having an unbalanced shaft
Assignee: Individual
•
Filing: 1949-11-07
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Granted: 1953-12-29
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Expires: 1969-11-07
Abstract
No abstract record available.
Inventors
- 👤 David L Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:00
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/28; B07B1/38; B07B1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1357292A
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US690731A
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US1328576A
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US1518236A
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US1750976A
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US2284671A
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US2274914A
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US2412840A
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US2393453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |