US2424476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant steam generator
Assignee: Combustion Engineering Inc
•
Filing: 1943-12-27
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Granted: 1947-07-22
•
Expires: 1963-12-27
Abstract
No abstract record available.
Inventors
- 👤 Leonard J Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/02; F23; F23M; F23M5/00; F23M5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1935635A
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US1887854A
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US2109840A
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US2126260A
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US2100190A
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US2212115A
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US2250849A
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US2213185A
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US2223199A
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US2363875A
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US2368629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-21 | 1951-01-20 | 1951-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-21 | 1955-01-20 | 1955-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-21 | 1959-01-20 | 1959-07-22 | $7700.00 | Window Closed / Lapsed |