US3050781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded in place rubber seat butterfly valve
Assignee: Henry Pratt Co LLC
•
Filing: 1959-08-28
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Granted: 1962-08-28
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Expires: 1979-08-28
Abstract
No abstract record available.
Inventors
- 👤 Henry R Killian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:34
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263; F16K1/2265; Y; Y10; Y10S; Y10S425/00; Y10S425/047; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49417
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191011664A
Cited
US1894644A
Cited
US1977351A
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US2468239A
Cited
US2554008A
Cited
US2644199A
Cited
US2769203A
Cited
US2923524A
Cited
US2961214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |