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US2659312A
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Centrifugal pump
Assignee: W H MARTIN
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Filing: 1950-09-08
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Granted: 1953-11-17
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Expires: 1970-09-08
Abstract
No abstract record available.
Inventors
- 👤 Wahle Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:25
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2238
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191128980A
Cited
US1543740A
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US1871747A
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US2291797A
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US2419924A
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US2426539A
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US2459220A
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US2581055A
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US2477043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |