Patent US3498332A successfully refreshed from Google Patents.
US3498332A
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US
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Liquid flow control valve
Assignee: Robertshaw US Holding Corp
•
Filing: 1967-08-24
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Granted: 1970-03-03
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Expires: 1987-08-24
Abstract
No abstract record available.
Inventors
- 👤 Arnold T Lybrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:57
CPC Classifications
F; F16; F16K; F16K11/00; F16K31/00; F16K31/12; F16K31/126; F16K31/1262; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879; Y10T137/86887; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86976; Y10T137/87265; Y10T137/87322; Y10T137/87378
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1993195A
Cited
US2618291A
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US2486608A
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US2653626A
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US2658523A
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US2737199A
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US2920653A
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US2922439A
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US3025881A
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US3364948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |