US2828608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved construction of combustion chamber of the cyclone or vortex type
Assignee: Power Jets Research and Development Ltd
•
Filing: 1951-11-05
•
Granted: 1958-04-01
•
Expires: 1971-11-05
Abstract
No abstract record available.
Inventors
- 👤 Cowlin Christopher John
- 👤 Cox Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:15
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/42; F23R3/58; F02; F02C; F02C3/00; F02C3/14; F23C; F23C3/00; F23C3/006; F23C3/008; F23R3/425
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1618808A
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GB615680A
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FR963507A
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US2552492A
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US2547619A
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US2555965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |