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US2042216A Expired / Lapsed US ⏱️ 0.0 years remaining

Ball-check valve

Assignee: OHIO INJECTOR CO
•
Filing: 1935-05-10
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Granted: 1936-05-26
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Expires: 1955-05-10
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Abstract

No abstract record available.

Inventors

  • 👤 Frank W Edwards

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 21:27
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; F16K15/042; F16K15/044; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7927; Y10T137/7928

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) 1939-05-26 1939-11-25 1940-05-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1943-05-26 1943-11-25 1944-05-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1947-05-26 1947-11-25 1948-05-26 $7700.00 Window Closed / Lapsed

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