Patent US2425177A successfully refreshed from Google Patents.
US2425177A
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US
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Turbine construction
Assignee: RTX Corp
•
Filing: 1943-05-11
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Granted: 1947-08-05
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Expires: 1963-05-11
Abstract
No abstract record available.
Inventors
- 👤 Cronstedt Val
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:47
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/24; F01D25/26; F01D25/16; F01D25/162; F02; F02C; F02C7/00; F02C7/24; 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)
GB190804157A
Cited
US1021225A
Cited
AT76744B
Cited
US1139696A
Cited
US1294245A
Cited
US1477360A
Cited
US1670452A
Cited
US1522191A
Cited
US1541834A
Cited
US1554230A
Cited
US1825580A
Cited
US1889554A
Cited
US1985964A
Cited
US2080425A
Cited
US2288734A
Cited
US2282894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-04 | 1951-02-03 | 1951-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-04 | 1955-02-03 | 1955-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-04 | 1959-02-03 | 1959-08-05 | $7700.00 | Window Closed / Lapsed |