Patent US6241757B1 successfully refreshed from Google Patents.
US2660859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined flameholder and turning vane
Assignee: RTX Corp
•
Filing: 1952-06-18
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Granted: 1953-12-01
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Expires: 1972-06-18
Abstract
No abstract record available.
Inventors
- 👤 Chamberlain John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:54
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/005; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2296023A
Cited
US2482394A
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US2503006A
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US2482505A
Cited
US2508420A
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US2592110A
Cited
US2632300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |