Patent US3004495A successfully refreshed from Google Patents.
US3004495A
Expired / Lapsed
US
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High speed hydrodynamic pump
Assignee: New York Air Brake LLC
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Filing: 1957-02-11
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Granted: 1961-10-17
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Expires: 1977-02-11
Abstract
No abstract record available.
Inventors
- 👤 Stanley L Macklis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:47
CPC Classifications
F; F04; F04D; F04D1/00; F04D1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1756958A
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US2124681A
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GB492854A
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DE735279C
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US2648491A
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US2690130A
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GB693871A
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DE919440C
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US2775208A
Cited
US2798438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |