Patent US2774374A successfully refreshed from Google Patents.
US2774374A
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Pulsation smoothing valve
Assignee: Individual
•
Filing: 1951-02-21
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Granted: 1956-12-18
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Expires: 1971-02-21
Abstract
No abstract record available.
Inventors
- 👤 Edgar R Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:13
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/0011; F02M37/0041; F16; F16L; F16L55/00; F16L55/04; F02M37/0023; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7297; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7809; Y10T137/7812; Y10T137/782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US329928A
Cited
US744297A
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US825559A
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US1611263A
Cited
US1890821A
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US1931386A
Cited
DE616458C
Cited
FR870918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |