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Patent US2837360A successfully refreshed from Google Patents.
US2837360A
Expired / Lapsed
US
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Self energizing sealing ring
Assignee: United Aircraft Products Inc
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Filing: 1953-08-20
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Granted: 1958-06-03
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Expires: 1973-08-20
Abstract
No abstract record available.
Inventors
- 👤 Edward L Ladd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:01
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/06; F16L17/08; F16J; F16J15/00; F16J15/46; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S277/926; Y10S285/00; Y10S285/917; Y10S285/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |