US2986367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Cooper Industries LLC
•
Filing: 1957-01-25
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Granted: 1961-05-30
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Expires: 1977-01-25
Abstract
No abstract record available.
Inventors
- 👤 Rouax Robert K Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:50
CPC Classifications
F; F16; F16K; F16K39/00; F16K39/04; E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/06; E21B33/061; E21B33/062; F16K3/00; F16K3/02; F16K3/0227; F16K5/00; F16K5/04; F16K5/0457; F16K5/0471
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AT45781B
Cited
US1657841A
Cited
GB416917A
Cited
US2331557A
Cited
GB534610A
Cited
US2318882A
Cited
FR1108435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |