US2477950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superheater
Assignee: Babcock and Wilcox Co
•
Filing: 1944-08-05
•
Granted: 1949-08-02
•
Expires: 1964-08-05
Abstract
No abstract record available.
Inventors
- 👤 Ervin G Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:33
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; F22B37/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US551680A
Cited
US1875142A
Cited
US1941258A
Cited
US2134713A
Cited
US2245209A
Cited
US2252071A
Cited
US2183496A
Cited
US2328039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |