Patent US3824744A successfully refreshed from Google Patents.
Patent US2916997A successfully refreshed from Google Patents.
US2916997A
Expired / Lapsed
US
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Double-outlet centrifugal pump
Assignee: A RESPONSABILITE DITE JOHANNES FRERES Ltee Ste
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Filing: 1956-04-09
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Granted: 1959-12-15
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Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Terrie Paul Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:31
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2205; F04D29/2211; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/50; F04D29/506; Y; Y10; Y10S; Y10S415/00; Y10S415/911
Claims Analysis
Total Claims: 0
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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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |