Patent US3525357A successfully refreshed from Google Patents.
US3525357A
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Pump valve apparatus
Assignee: WATERS CO
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Filing: 1968-11-18
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Granted: 1970-08-25
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Expires: 1988-11-18
Abstract
No abstract record available.
Inventors
- 👤 William R Koreski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:32
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/147; F16K15/1471; A; A61; A61M; A61M60/00; A61M60/10; A61M60/104; A61M60/109; A61M60/30; A61M60/36; A61M60/38; A61M60/40; A61M60/424; F04; F04B; F04B43/00; F04B43/08; F04B53/00; F04B53/10; F04B53/1037; F04B53/1047; F04B53/1057; F16K15/1402; A61M60/20; A61M60/247; A61M60/253; A61M60/268; A61M60/80; A61M60/855; A61M60/89; A61M60/892; A61M60/894; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/7859; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7885; Y10T137/8593; Y10T137/877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |