Patent US2845216A successfully refreshed from Google Patents.
US2845216A
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Centrifugal apparatus for the circulation of fluids
Assignee: Neu SA
•
Filing: 1953-10-23
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Granted: 1958-07-29
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Expires: 1973-10-23
Abstract
No abstract record available.
Inventors
- 👤 Sallou Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:08
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/288; F04D29/40; F04D29/42; F04D29/44; F04D29/441; F04D29/442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB190602134A
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GB191105097A
Cited
US1447915A
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Cited
US1879803A
Cited
GB452019A
Cited
US2321276A
Cited
US2351516A
Cited
US2390504A
Cited
US2681760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |