Patent US1932914A successfully refreshed from Google Patents.
US2853019A
Expired / Lapsed
US
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Balanced single passage impeller pump
Assignee: New York Air Brake LLC
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Filing: 1954-09-01
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Granted: 1958-09-23
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Expires: 1974-09-01
Abstract
No abstract record available.
Inventors
- 👤 Richard S Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:21
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2238; F04D29/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE61217C
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US666023A
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GB203659A
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US1578851A
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US1654907A
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DE743201C
Cited
DE720243C
Cited
GB574079A
Cited
US2700344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |