Patent US3069859A successfully refreshed from Google Patents.
US3069859A
Expired / Lapsed
US
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Regulating arrangement for steam turbine installation with intermediate superheater
Assignee: BBC Brown Boveri AG Germany
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Filing: 1960-06-15
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Granted: 1962-12-25
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Expires: 1980-06-15
Abstract
No abstract record available.
Inventors
- 👤 Weehuizen Frits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:30
CPC Classifications
F; F01; F01K; F01K9/00; F01K9/04; F01K7/00; F01K7/16; F01K7/22; F01K7/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE539405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |