US2795109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined combustion chamber, heat exchanger and flame trap for combustion turbine plants
Assignee: CA Parsons and Co Ltd
•
Filing: 1953-06-08
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Granted: 1957-06-11
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Expires: 1973-06-08
Abstract
No abstract record available.
Inventors
- 👤 Hryniszak Waldemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F02; F02C; F02C7/00; F02C7/08; F02C7/10; F02C7/105; F23; F23R; F23R3/00; F23R3/005; F23R3/28; F23R3/38; F28D19/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US981978A
Cited
US1516108A
Cited
US2399394A
Cited
US2667034A
Cited
US2551112A
Cited
US2630678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |