US2648433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for controlling the density of the apex discharge of a cyclone
Assignee: Dorr Co
•
Filing: 1950-12-05
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Granted: 1953-08-11
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Expires: 1970-12-05
Abstract
No abstract record available.
Inventors
- 👤 Wright Orrin Hughitt
- 👤 Weaver Joseph Leonard
- 👤 Fitch Elliot Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:59
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/07; B; B04; B04C; B04C11/00; B04C5/00; B04C5/14; B04C5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2377524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |