US2636609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desilting valve
Assignee: Neyrpic SA
•
Filing: 1949-02-11
•
Granted: 1953-04-28
•
Expires: 1969-02-11
Abstract
No abstract record available.
Inventors
- 👤 Blanchet Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:30
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/02; E02B3/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1107391A
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US1059060A
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FR583941A
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US1908691A
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US2140059A
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GB512732A
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US2199673A
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US2342024A
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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) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |