US2914040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor generator
Assignee: Babcock and Wilcox Co
•
Filing: 1957-11-14
•
Granted: 1959-11-24
•
Expires: 1977-11-14
Abstract
No abstract record available.
Inventors
- 👤 Will H Rowand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:47
CPC Classifications
F; F22; F22G; F22G1/00; F22G1/06; F22B; F22B21/00; F22B21/34; F22B21/341; F22B21/343; F22B37/00; F22B37/02; F22B37/10; F22B37/14; F22B37/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB720833A
Cited
US2285442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |