US3392513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclonic separator
Assignee: Svenska Flaktfabriken AB
•
Filing: 1966-11-22
•
Granted: 1968-07-16
•
Expires: 1986-11-22
Abstract
No abstract record available.
Inventors
- 👤 Hedin Ingemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:25
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/24; B04C5/28; B04C5/02; B04C5/04; B04C5/14; B04C5/15; B04C5/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US414980A
Cited
US522923A
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US603285A
Cited
US1067710A
Cited
US2014287A
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US2869677A
Cited
GB759118A
Cited
GB900696A
Cited
US3056662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |