US2685280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superheater-reheater heat exchanger
Assignee: Combustion Engineering Inc
•
Filing: 1952-10-09
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Granted: 1954-08-03
•
Expires: 1972-10-09
Abstract
No abstract record available.
Inventors
- 👤 Henry J Blaskowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:38
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB249708A
Cited
GB275236A
Cited
US1732009A
Cited
GB308261A
Cited
GB433176A
Cited
DE652470C
Cited
US2602433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |