Patent US3463189A successfully refreshed from Google Patents.
US3463189A
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US
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Blow-down vent and check valve
Assignee: TESORO PUMP & VALVE Co A CORP OF
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Filing: 1966-03-07
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Granted: 1969-08-26
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Expires: 1986-03-07
Abstract
No abstract record available.
Inventors
- 👤 John R Fitzpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:09
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/168; F16K15/00; F16K15/14; F16K15/1402; F16K15/148; F16K17/04; F16K17/0446; F16K17/0453; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/7854; Y10T137/7857; Y10T137/7879; Y10T137/7888; Y10T137/789; Y10T137/8593; Y10T137/87917; Y10T137/88054
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) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |