US2767729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapered rotary plug valve
Assignee: Mueller Co
•
Filing: 1953-11-09
•
Granted: 1956-10-23
•
Expires: 1973-11-09
Abstract
No abstract record available.
Inventors
- 👤 Frank H Mueller
- 👤 Walter J Bowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:11
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/16; F16K5/162; F16K5/166; F16K5/168; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4393; Y10T137/4421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1994618A
Cited
US1848369A
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US2065726A
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US1937122A
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US2041669A
Cited
US2103536A
Cited
US2145628A
Cited
US2573238A
Cited
US2663290A
Cited
US2685299A
Cited
US2653791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |