Patent US2397183A successfully refreshed from Google Patents.
US2397183A
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US
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Fluid impeller drive
Assignee: Westinghouse Electric Corp
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Filing: 1943-08-17
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Granted: 1946-03-26
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Expires: 1963-08-17
Abstract
No abstract record available.
Inventors
- 👤 Lee A Kilgore
- 👤 Philip C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:46
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/18; H02K7/1807; H02K7/1823; H02K7/183; F; F03; F03D; F03D15/00; F03D15/10; F03D7/00; F03D7/02; F03D7/026; F03D9/00; F03D9/20; F03D9/25; F04; F04D; F04D25/00; F04D25/02; F04D25/06; F04D29/00; F04D29/26; F04D29/32; F04D29/34; F04D29/36; F04D29/362; H02K7/1838; H02P; H02P23/00; H02P23/16; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-03-25 | 1949-09-24 | 1950-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-03-25 | 1953-09-24 | 1954-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-03-25 | 1957-09-24 | 1958-03-26 | $7700.00 | Window Closed / Lapsed |