US2997959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Westinghouse Electric Corp
•
Filing: 1958-01-24
•
Granted: 1961-08-29
•
Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Harvey G Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:48
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2205; F04D29/2211
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE317933C
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US949150A
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US963756A
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US1825622A
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GB272713A
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US1889816A
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DE603708C
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GB499357A
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US2658455A
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US2623466A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |