US2912768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone discharge chamber
Assignee: Cherry Burrell Corp
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Filing: 1955-11-08
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Granted: 1959-11-17
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Expires: 1975-11-08
Abstract
No abstract record available.
Inventors
- 👤 Charles R Huston
- 👤 Grant H Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:59
CPC Classifications
A; A23; A23C; A23C9/00; A23C9/16; F; F26; F26B; F26B17/00; F26B17/10; F26B17/101; F26B17/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |