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US3356103A Expired / Lapsed US ⏱️ 0.0 years remaining

Check valve

Assignee: EG&G Sealol Inc
•
Filing: 1964-10-05
•
Granted: 1967-12-05
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Expires: 1984-10-05
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Abstract

No abstract record available.

Inventors

  • 👤 Biello Stephen Joseph
  • 👤 Marshall Charles Russell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 04:38
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/025; F16K15/026; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/7722; Y10T137/7837; Y10T137/7854; Y10T137/7856; Y10T137/7904; Y10T137/7922; Y10T137/7923; Y10T137/7929; Y10T137/7934

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US14424A Cited
US746402A Cited
US2339101A Cited
US2602631A Cited
US2994340A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-12-04 1971-06-05 1971-12-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-12-04 1975-06-05 1975-12-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-12-04 1979-06-05 1979-12-05 $7700.00 Window Closed / Lapsed

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