Patent US2495525A successfully refreshed from Google Patents.
US2495525A
Expired / Lapsed
US
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Circulating pump for steam generators
Assignee: Worthington Pump and Machinery Corp
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Filing: 1943-11-03
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Granted: 1950-01-24
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Expires: 1963-11-03
Abstract
No abstract record available.
Inventors
- 👤 Igor J Karassik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:24
CPC Classifications
F; F04; F04D; F04D13/00; F22; F22D; F22D11/00; F22D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US853059A
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US1070809A
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US1020704A
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US1004822A
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US1352743A
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US1734458A
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US1815439A
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US1867236A
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GB380886A
Cited
US2169935A
Cited
US2281650A
Cited
US2393691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |