Patent US4639325A successfully refreshed from Google Patents.
US2985192A
Expired / Lapsed
US
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Double pinch valve
Assignee: Wyeth Holdings LLC
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Filing: 1959-07-24
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Granted: 1961-05-23
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Expires: 1979-07-24
Abstract
No abstract record available.
Inventors
- 👤 Taylor Arthur Sinclair
- 👤 Corley Joseph Ames
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:58
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/06; F04; F04B; F04B7/00; F04B7/0003; F04B7/0015; F04B7/0042; F04B7/0053; F16K11/00; F16K11/02; F16K11/022; F16K11/027; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919
Claims Analysis
Total Claims: 0
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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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |