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Patent US2643853A successfully refreshed from Google Patents.
US2643853A
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Turbine apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1948-07-26
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Granted: 1953-06-30
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Expires: 1968-07-26
Abstract
No abstract record available.
Inventors
- 👤 Arnold H Redding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:37
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/16; F01D5/30; F01D5/3007; Y; Y10; Y10S; Y10S416/00; Y10S416/50; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1434414A
Cited
US1619133A
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US1833751A
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US2310412A
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US2317338A
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US2434935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |