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US2430427A Expired / Lapsed US ⏱️ 0.0 years remaining

Check valve

Assignee: Individual
•
Filing: 1943-11-10
•
Granted: 1947-11-04
•
Expires: 1963-11-10
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Abstract

No abstract record available.

Inventors

  • 👤 Katcher Morris

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 16:38
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/025; F16K15/026; F16K15/028; F02; F02M; F02M59/00; F02M59/12; F02M59/14; F02M2700/00; F02M2700/13; F02M2700/1317; F02M2700/1323; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7938

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US484843A Cited
US517914A Cited
US1251758A Cited
US1413371A Cited
US1654474A Cited
US1872928A Cited
US1998444A Cited
US2027137A Cited
US2241758A Cited
US2320697A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1950-11-03 1951-05-05 1951-11-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1954-11-03 1955-05-05 1955-11-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1958-11-03 1959-05-05 1959-11-04 $7700.00 Window Closed / Lapsed

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