US2536039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid heat exchange installation and method of forming the same
Assignee: Babcock and Wilcox Co
•
Filing: 1945-10-04
•
Granted: 1951-01-02
•
Expires: 1965-10-04
Abstract
No abstract record available.
Inventors
- 👤 John P Craven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:08
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; F22B37/201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22108E
Cited
US1761567A
Cited
US1982623A
Cited
US1774150A
Cited
US2239662A
Cited
US2219352A
Cited
US2306772A
Cited
US2360837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |