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Patent US2960938A successfully refreshed from Google Patents.
US2960938A
Expired / Lapsed
US
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Sealed centrifugal pump
Assignee: Worthington Corp
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Filing: 1958-03-07
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Granted: 1960-11-22
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Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
- 👤 John G Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:32
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/06; F04D29/061; F04D15/00; F04D15/02; F04D29/08; F04D29/10; F04D29/106; F04D29/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR582365A
Cited
US2441708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |