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Patent US3036709A successfully refreshed from Google Patents.
US3036709A
Expired / Lapsed
US
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Centrifugal air classifier
Assignee: SNA Europe Industries AB
•
Filing: 1960-03-08
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Granted: 1962-05-29
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Expires: 1980-03-08
Abstract
No abstract record available.
Inventors
- 👤 Mansson Bo Gustav Emil
- 👤 Lundgren Ake Axel Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:20
CPC Classifications
B; B07; B07B; B07B7/00; B07B7/08; B07B7/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2796173A
Cited
US2922520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |