Patent US2949321A successfully refreshed from Google Patents.
US2949321A
Expired / Lapsed
US
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Mechanical seal for liquid oxygen pump
Assignee: Borg Warner Corp
•
Filing: 1957-01-28
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Granted: 1960-08-16
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Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Tracy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:59
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F04D29/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732126A
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BE501574A
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BE520921A
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US2049774A
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US2100220A
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US2586297A
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US2464136A
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US2632395A
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US2610075A
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GB748827A
Cited
US2794399A
Cited
US2791991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |