US3051432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage hydromotor-operated valve
Assignee: Sullivan Valve and Engineering Co
•
Filing: 1960-02-18
•
Granted: 1962-08-28
•
Expires: 1980-02-18
Abstract
No abstract record available.
Inventors
- 👤 Timothy J Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:16
CPC Classifications
F; F22; F22D; F22D11/00; F15; F15B; F15B21/00; F15B21/08; F22D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2476400A
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US2488780A
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US2715009A
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US2800921A
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US2820357A
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US2918087A
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US2849670A
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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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |