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Patent US2636484A successfully refreshed from Google Patents.
US2636484A
Expired / Lapsed
US
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Steam generator
Assignee: Babcock and Wilcox Co
•
Filing: 1949-04-08
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Granted: 1953-04-28
•
Expires: 1969-04-08
Abstract
No abstract record available.
Inventors
- 👤 Ervin G Bailey
- 👤 Ralph M Hardgrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:55
CPC Classifications
F; F22; F22B; F22B21/00; F22B21/007
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |