Patent US3135495A successfully refreshed from Google Patents.
US3135495A
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US
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Thermostatic control valve
Assignee: Kysor Heater Co
•
Filing: 1961-11-24
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Granted: 1964-06-02
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 David R Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:01
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1628955A
Cited
US2037911A
Cited
US2297817A
Cited
US2477377A
Cited
US2512548A
Cited
US2829837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |