Patent US3227089A successfully refreshed from Google Patents.
US3227089A
Expired / Lapsed
US
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Centrifugal pump
Assignee: US Philips Corp
•
Filing: 1964-04-21
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Granted: 1966-01-04
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Expires: 1984-04-21
Abstract
No abstract record available.
Inventors
- 👤 Gerardus Johannes Haarhuis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:31
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/004; F04D1/00; F04D1/06; F04D1/063; F04D1/066; F04D29/00; F04D29/40; F04D29/42; F04D29/426; F04D9/001; Y; Y10; Y10S; Y10S415/00; Y10S415/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2416031A
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Cited
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US2829598A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |