Patent US2434979A successfully refreshed from Google Patents.
US2434979A
Expired / Lapsed
US
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Motor drive for centrifugal pumps
Assignee: JACOSEN Manufacturing Co
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Filing: 1945-05-21
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Granted: 1948-01-27
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Expires: 1965-05-21
Abstract
No abstract record available.
Inventors
- 👤 Charles J Bergh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:35
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/043; F04D29/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1687658A
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US2107481A
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US1945833A
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US1920315A
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US2164837A
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US2085986A
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US2139379A
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US2166404A
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US2106058A
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US2298131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-26 | 1951-07-28 | 1952-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-26 | 1955-07-28 | 1956-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-26 | 1959-07-28 | 1960-01-27 | $7700.00 | Window Closed / Lapsed |