Patent US3530889A successfully refreshed from Google Patents.
US3530889A
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US
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Mixing valve with secondary shutoff
Assignee: Individual
•
Filing: 1969-06-02
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Granted: 1970-09-29
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Expires: 1989-06-02
Abstract
No abstract record available.
Inventors
- 👤 Lloyd Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:44
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/48; F16K11/00; F16K11/02; F16K11/08; F16K11/087; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/698; Y10T137/8593; Y10T137/86389; Y10T137/86397; Y10T137/86493; Y10T137/86815; Y10T137/86823; Y10T137/87056; Y10T137/87072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |