Patent US2858098A successfully refreshed from Google Patents.
US2858098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat ring for a ball valve
Assignee: Worcester Controls Corp
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Filing: 1956-05-10
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Granted: 1958-10-28
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Expires: 1976-05-10
Abstract
No abstract record available.
Inventors
- 👤 Robert E Sanctuary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2606738A
Cited
GB692085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |