US2848108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electrostatic separation
Assignee: General Mills Inc
•
Filing: 1956-12-31
•
Granted: 1958-08-19
•
Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 William A Brastad
- 👤 Eli C Gear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:31
CPC Classifications
B; B03; B03C; B03C7/00; B03C7/02; B03C7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US880891A
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DE223426C
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US2699869A
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US2764288A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |