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US2628810A Expired / Lapsed US ⏱️ 0.0 years remaining

Check valve

Assignee: Individual
•
Filing: 1949-03-19
•
Granted: 1953-02-17
•
Expires: 1969-03-19
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Abstract

No abstract record available.

Inventors

  • 👤 George K Moore

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 17:31
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F01; F01P; F01P11/00; F01P11/02; F01P11/0204; F01P11/0209; F01P11/0238; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931; Y10T137/7932

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US587416A Cited
US1013246A Cited
US1409270A Cited
US1554127A Cited
US1695722A Cited
US1779421A Cited
US1923395A Cited
US2182278A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1956-02-17 1956-08-18 1957-02-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1960-02-17 1960-08-18 1961-02-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1964-02-17 1964-08-18 1965-02-17 $7700.00 Window Closed / Lapsed

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