US3393801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fractionating particulate materials
Assignee: SNA Europe Industries AB
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Filing: 1965-11-22
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Granted: 1968-07-23
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Expires: 1985-11-22
Abstract
No abstract record available.
Inventors
- 👤 Gustavsson Karl-Axel Goran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:33
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/04; B; B03; B03B; B03B5/00; B03B5/02; B03B5/26; B03B5/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US128404A
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FR326471A
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US1186677A
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DE386997C
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US1521787A
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US1709365A
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US3144773A
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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) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |