US3531079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled fluid valve
Assignee: GREENE ENG CO
•
Filing: 1966-04-13
•
Granted: 1970-09-29
•
Expires: 1986-04-13
Abstract
No abstract record available.
Inventors
- 👤 George B Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:35
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/14; F16K7/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1017857A
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US2529028A
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US2556596A
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GB656585A
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GB723537A
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US2905431A
Cited
US2943643A
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US3176714A
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US3245426A
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US3252481A
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US3332322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |