Patent US4638375A successfully refreshed from Google Patents.
Patent US2903009A successfully refreshed from Google Patents.
US2903009A
Expired / Lapsed
US
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Valves for mixing fluids at different temperatures
Assignee: Individual
•
Filing: 1956-09-07
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Granted: 1959-09-08
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Expires: 1976-09-07
Abstract
No abstract record available.
Inventors
- 👤 Tacchi Percy George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:58
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/1313; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2559; Y10T137/2564; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7875
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE658787C
Cited
US2211058A
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US2317717A
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US2682883A
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US2679861A
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US2714488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |