Patent US1747011A successfully refreshed from Google Patents.
US1747011A
Expired / Lapsed
US
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Superheater
Assignee: Babcock and Wilcox Co
•
Filing: 1925-02-02
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Granted: 1930-02-11
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Expires: 1945-02-02
Abstract
No abstract record available.
Inventors
- 👤 Howard J Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:14
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/10; Y; Y10; Y10S; Y10S116/00; Y10S116/18; Y10S116/22; Y10S165/00; Y10S165/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-02-10 | 1933-08-12 | 1934-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-02-10 | 1937-08-12 | 1938-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-02-10 | 1941-08-12 | 1942-02-11 | $7700.00 | Window Closed / Lapsed |