US2704549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-chattering relief valve
Assignee: —
•
Filing: —
•
Granted: 1955-03-22
•
Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0433; B; B30; B30B; B30B15/00; B30B15/16; B30B15/22; F16K15/00; F16K15/02; F16K15/04; F16K15/044; F16K15/06; F16K15/063; F16K47/00; F16K47/01; F16K47/011; F16K47/0111; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7837; Y10T137/785; Y10T137/7904; Y10T137/7922; Y10T137/7927; Y10T137/7928; Y10T137/7929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807564A
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US1124113A
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US1569187A
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US2061480A
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US1999693A
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US1961758A
Cited
US2225880A
Cited
US2212600A
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US2415258A
Cited
US2470372A
Cited
US2440608A
Cited
US2541395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |