Patent US2985107A successfully refreshed from Google Patents.
US2985107A
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Systems for automatically controlling flow of fluid through a centrifugal pump in response to temperature differentials at the intake and discharge thereof
Assignee: Hagan Chemicals and Controls Inc
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Filing: 1958-05-19
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Granted: 1961-05-23
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Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 George R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:12
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0005; F04D15/0011; F22; F22D; F22D5/00; F22D5/18; Y; Y10; Y10S; Y10S138/00; Y10S138/07; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/264
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2207809A
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US2442049A
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US2606420A
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US2610466A
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US2646931A
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US2672820A
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US2707440A
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US2888809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |