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Patent US2726882A successfully refreshed from Google Patents.
US2726882A
Expired / Lapsed
US
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Adjustable high pressure rotating shaft seal
Assignee: Standard Oil Co
•
Filing: 1953-05-29
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Granted: 1955-12-13
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Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles J Ryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:42
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; Y; Y10; Y10S; Y10S277/00; Y10S277/904; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1614120A
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US2137328A
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US2291709A
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US2486939A
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US2453055A
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US2654364A
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US2547321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |