Patent US3401640A successfully refreshed from Google Patents.
US3401640A
Expired / Lapsed
US
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Centrifugal pumps
Assignee: Newage Lyon Ltd
•
Filing: 1966-12-05
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Granted: 1968-09-17
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Expires: 1986-12-05
Abstract
No abstract record available.
Inventors
- 👤 Fowler Brian John
- 👤 Bose Arun Kumar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:57
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/004; F04D9/005; F04D9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US879484A
Cited
US1871662A
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US1946212A
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US2741991A
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US2900919A
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GB877878A
Cited
US3128713A
Cited
US3070028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |