US2797939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-contained cartridge type rotary seal with floatably mounted sealing members
Assignee: City National Bank and Trust Co
•
Filing: 1954-05-18
•
Granted: 1957-07-02
•
Expires: 1974-05-18
Abstract
No abstract record available.
Inventors
- 👤 William F Laser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:46
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3404; F16J15/3408; F16J15/3412; F16J15/3416
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1327002A
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US1845363A
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US1956366A
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US2089377A
Cited
US2243255A
Cited
US2396319A
Cited
US2505868A
Cited
US2489781A
Cited
US2667388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |