Patent FR379662A successfully refreshed from Google Patents.
US3064879A
Expired / Lapsed
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Fans having radial flow rotors in axial flow casings
Assignee: Westinghouse Electric Corp
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Filing: 1961-04-03
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Granted: 1962-11-20
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Expires: 1981-04-03
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:08
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/08; F04D17/16; F04D17/165; F16; F16C; F16C37/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US390508A
Cited
GB190400229A
Cited
DE339017C
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US1429538A
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US2469820A
Cited
US2601030A
Cited
FR1016738A
Cited
US2888188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |