US2977989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing valves for controlling the mixing of hot and cold fluids
Assignee: Mcynell & Sons Ltd
•
Filing: 1959-03-04
•
Granted: 1961-04-04
•
Expires: 1979-03-04
Abstract
No abstract record available.
Inventors
- 👤 Meynell Lionel Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:26
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F16K11/163; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686; Y10T137/86928; Y10T137/87016; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US752241A
Cited
US1842825A
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DE528080C
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US1912295A
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US2106568A
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US2317717A
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US2308127A
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US2768643A
Cited
US2888942A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |