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Patent US2643862A successfully refreshed from Google Patents.
US2643862A
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Steam reheater
Assignee: Bethlehem Steel Corp
•
Filing: 1949-02-18
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Granted: 1953-06-30
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Expires: 1969-02-18
Abstract
No abstract record available.
Inventors
- 👤 Stelling John Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:48
CPC Classifications
F; F22; F22G; F22G1/00; F22G1/005; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/405; Y10S165/412
Claims Analysis
Total Claims: 0
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US2432362A
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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) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |