US2829667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricated rotary plug valve
Assignee: Mueller Co
•
Filing: 1954-06-01
•
Granted: 1958-04-08
•
Expires: 1974-06-01
Abstract
No abstract record available.
Inventors
- 👤 Frank H Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:29
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/222; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4393
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1915068A
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US2041669A
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US2216150A
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US2208870A
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US2255182A
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US2289720A
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US2391278A
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US2616657A
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US2693815A
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US2653791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |