US3448563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone separator having substantially centrally located openings for lowering the pressure drop across the cyclone
Assignee: Air Maze Corp
•
Filing: 1966-09-19
•
Granted: 1969-06-10
•
Expires: 1986-09-19
Abstract
No abstract record available.
Inventors
- 👤 Harold R Sobeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:06
CPC Classifications
B; B04; B04C; B04C3/00; B04C3/06; B04C3/04; F; F22; F22B; F22B37/00; F22B37/02; F22B37/26; F22B37/32; F22B37/327; G; G21; G21C; G21C15/00; G21C15/16; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1790305A
Cited
US1930476A
Cited
US1349608A
Cited
US1396882A
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US1525136A
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US1933588A
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US2201301A
Cited
US2509172A
Cited
US2609062A
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US2569909A
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US2647588A
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US2806551A
Cited
BE520529A
Cited
US3030755A
Cited
US2936043A
Cited
US3086343A
Cited
US3169842A
Cited
US3348364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |