Patent US2970770A successfully refreshed from Google Patents.
US2970770A
Expired / Lapsed
US
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Thermostatic mixing valve
Assignee: Leonard Valve Co LLC
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Filing: 1959-04-28
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Granted: 1961-02-07
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Expires: 1979-04-28
Abstract
No abstract record available.
Inventors
- 👤 Lawrence E Bowman
- 👤 Frederick C Coppage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:17
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/132; G05D23/134; G05D23/1346; Y; Y10; Y10T; Y10T137/00; Y10T137/6198; Y10T137/6253
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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |