US2560207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annular combustion chamber with circumferentially spaced double air-swirl burners
Assignee: Wright Aeronautical Corp
•
Filing: 1948-02-04
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Granted: 1951-07-10
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Expires: 1968-02-04
Abstract
No abstract record available.
Inventors
- 👤 Lloyd E Berggren
- 👤 William C Schaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:30
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/10; F23R3/12; F23R3/14; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2227666A
Cited
CH210655A
Cited
US2404335A
Cited
US2470184A
Cited
US2402377A
Cited
GB588086A
Cited
US2504106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |