Patent US2844004A successfully refreshed from Google Patents.
US2844004A
Expired / Lapsed
US
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System for starting forced flow steam generators including a plurality of resuperheaters
Assignee: Sulzer AG
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Filing: 1954-06-01
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Granted: 1958-07-22
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Expires: 1974-06-01
Abstract
No abstract record available.
Inventors
- 👤 Vogler Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:48
CPC Classifications
F; F01; F01K; F01K3/00; F01K3/18; F01K3/20; F01K3/22; F22; F22B; F22B35/00; F22B35/06; F22B35/14; Y; Y10; Y10S; Y10S122/00; Y10S122/04; Y10S122/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2064444A
Cited
US2065782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |