Patent US2811955A successfully refreshed from Google Patents.
US2811955A
Expired / Lapsed
US
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Vapor generating installation with multiple platen radiant superheater
Assignee: Babcock and Wilcox Co
•
Filing: 1950-12-06
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Granted: 1957-11-05
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Expires: 1970-12-06
Abstract
No abstract record available.
Inventors
- 👤 Paul H Koch
- 👤 Arthur E Raynor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:11
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/14; F22B37/143; F22G; F22G1/00; F22G1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20192E
Cited
US1245005A
Cited
US1771944A
Cited
US2002463A
Cited
US2032390A
Cited
FR832563A
Cited
GB504114A
Cited
US2250849A
Cited
GB516070A
Cited
DE738925C
Cited
GB523870A
Cited
US2308762A
Cited
US2357303A
Cited
US2403237A
Cited
US2424476A
Cited
US2567058A
Cited
US2477950A
Cited
US2519566A
Cited
US2550683A
Cited
US2553493A
Cited
US2602433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |