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US2542873A
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US
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Multistage deaerating and reheating hot well for steam condensers
Assignee: Ingersoll Rand Co
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Filing: 1948-06-18
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Granted: 1951-02-20
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Expires: 1968-06-18
Abstract
No abstract record available.
Inventors
- 👤 Alfred D Karr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:45
CPC Classifications
F; F28; F28B; F28B9/00; F28B9/08; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/192
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1342841A
Cited
US1328828A
Cited
GB270378A
Cited
US1790154A
Cited
DE569487C
Cited
US1962183A
Cited
US1855231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |