US2575885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam superheat control by automatic and extended-range means
Assignee: Combustion Engineering Inc
•
Filing: 1948-04-01
•
Granted: 1951-11-20
•
Expires: 1968-04-01
Abstract
No abstract record available.
Inventors
- 👤 Harvey C Mittendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:52
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US933577A
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US2101106A
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US2124215A
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GB484053A
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US2313841A
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US2374178A
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US2410017A
Cited
US2363875A
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US2402705A
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US2424476A
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US2488572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |