US3055348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid heater tube platen supports
Assignee: Babcock and Wilcox Co
•
Filing: 1959-04-10
•
Granted: 1962-09-25
•
Expires: 1979-04-10
Abstract
No abstract record available.
Inventors
- 👤 Leslie O Brash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:38
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/007; F28F9/013; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; F22B37/202; F22B37/203
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB313803A
Cited
US1889861A
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US1894692A
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US2067671A
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US2308762A
Cited
FR898090A
Cited
US2897794A
Cited
FR1046816A
Cited
US2779316A
Cited
US2851017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |