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US3058486A Expired / Lapsed US ⏱️ 0.0 years remaining

Check valve

Assignee: Individual
•
Filing: 1960-01-04
•
Granted: 1962-10-16
•
Expires: 1980-01-04
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Abstract

No abstract record available.

Inventors

  • 👤 John J Mcdermott
  • 👤 Bodnar Alex

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:17
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/025; F16K15/026; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7854; Y10T137/7856; Y10T137/7866; Y10T137/7867; Y10T137/7868; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7937

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1150743A Cited
US1269616A Cited
CH87254A Cited
US1993567A Cited
US1938418A Cited
FR859658A Cited
US2710023A Cited
US2737974A Cited
US2918083A Cited
US2800142A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1965-10-15 1966-04-16 1966-10-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1969-10-15 1970-04-16 1970-10-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1973-10-15 1974-04-16 1974-10-16 $7700.00 Window Closed / Lapsed

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