Patent US3401915A successfully refreshed from Google Patents.
US3401915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient material valve seal ring
Assignee: M&J Valve Co
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Filing: 1966-05-10
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Granted: 1968-09-17
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Expires: 1986-05-10
Abstract
No abstract record available.
Inventors
- 👤 Kee W Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:56
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/0227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US136724A
Cited
US2717793A
Cited
US2995057A
Cited
US3061321A
Cited
US3109623A
Cited
US3215157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |