US2982515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve sealing elements
Assignee: Mission Manufacturing Co
•
Filing: 1957-10-04
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Granted: 1961-05-02
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Expires: 1977-10-04
Abstract
No abstract record available.
Inventors
- 👤 Rule Clinton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:39
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/46; F16K1/465; F16K1/42; F16K1/427; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49306; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49908; Y10T29/49909; Y10T29/49913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1705800A
Cited
US1948625A
Cited
US1948628A
Cited
US1947071A
Cited
US1966264A
Cited
US2739374A
Cited
US2803056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |