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US2997239A
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Thermostatic mixing valve
Assignee: Powers Regulator Co
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Filing: 1958-04-21
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Granted: 1961-08-22
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Expires: 1978-04-21
Abstract
No abstract record available.
Inventors
- 👤 Priesmeyer Charles Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:26
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/132; G05D23/134; G05D23/1346; G05D23/1353
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1348589A
Cited
US1611650A
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GB514326A
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US2442886A
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US2657859A
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US2828075A
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US2826367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |