US2902982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forced circulation vapor generating units
Assignee: Babcock and Wilcox Co
•
Filing: 1953-06-26
•
Granted: 1959-09-08
•
Expires: 1973-06-26
Abstract
No abstract record available.
Inventors
- 👤 Will H Rowand
- 👤 De Carr C Braddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:38
CPC Classifications
F; F22; F22B; F22B29/00; F22B29/06; F22B29/10; Y; Y10; Y10S; Y10S122/00; Y10S122/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE503778A
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US1961233A
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DE827384C
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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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |