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Patent US2941781A successfully refreshed from Google Patents.
US2941781A
Expired / Lapsed
US
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Guide vane array for turbines
Assignee: Westinghouse Electric Corp
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Filing: 1955-10-13
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Granted: 1960-06-21
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Expires: 1975-10-13
Abstract
No abstract record available.
Inventors
- 👤 William B Boyum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:20
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F02; F02C; F02C3/00; F02C3/04; F02C3/06; F05; F05B; F05B2230/00; F05B2230/60; F05B2230/604; F05B2230/606; F05D; F05D2230/00; F05D2230/60; F05D2230/64; F05D2230/642
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |