US2643089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unseating structure for rotary plug valves
Assignee: Mueller Co
•
Filing: 1946-10-31
•
Granted: 1953-06-23
•
Expires: 1966-10-31
Abstract
No abstract record available.
Inventors
- 👤 Lucien W Mueller
- 👤 Tratzik Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:35
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0457; F16K5/0478; F16K5/08; F16K5/14; F16K5/18; F16K5/184
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1679370A
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US1814534A
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US1989009A
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US2063699A
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US2076838A
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US2039220A
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US2076839A
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US2200474A
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US2285222A
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US2438672A
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US2505270A
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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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |