US3059892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature pilot control valve
Assignee: Hays Manufacturing Co
•
Filing: 1959-07-16
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Granted: 1962-10-23
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Expires: 1979-07-16
Abstract
No abstract record available.
Inventors
- 👤 Richard T Windsor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:22
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1250388A
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FR499334A
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GB676519A
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US2694544A
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US2701119A
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US2851244A
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US2843434A
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FR1110895A
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US2888233A
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US2877071A
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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) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |