Patent US2845906A successfully refreshed from Google Patents.
US2845906A
Expired / Lapsed
US
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Vapor generating unit
Assignee: Babcock and Wilcox Co
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Filing: 1956-10-23
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Granted: 1958-08-05
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Expires: 1976-10-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur J Gram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:19
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/26; F22B37/268; F22B1/00; F22B1/02; F22B1/021; Y; Y10; Y10S; Y10S261/00; Y10S261/10; Y10S55/00; Y10S55/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |