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US3423933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclic process for steam power plants
Assignee: Hitachi Zosen Inova Steinmueller GmbH
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Filing: 1966-02-28
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Granted: 1969-01-28
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Expires: 1986-02-28
Abstract
No abstract record available.
Inventors
- 👤 Klaus Knizia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:32
CPC Classifications
F; F01; F01K; F01K7/00; F01K7/34; F01K7/40; F01K7/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR1021451A
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DE952347C
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CH345022A
Cited
US2991620A
Cited
FR1245852A
Cited
US3048017A
Cited
US3016712A
Cited
US3289408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |