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US2539088A Expired / Lapsed US ⏱️ 0.0 years remaining

Shutoff valve

Assignee: Individual
•
Filing: 1946-08-17
•
Granted: 1951-01-23
•
Expires: 1966-08-17
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Abstract

No abstract record available.

Inventors

  • 👤 Uriel H Leach

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 14:30
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/06; B; B60; B60R; B60R25/00; B60R25/01; B60R25/04; B60R25/042; F02; F02B; F02B1/00; F02M; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/438; F02M2700/4388; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6881; Y10T137/6892; Y10T137/7069

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1000523A Cited
US1040509A Cited
US1211756A Cited
US1700989A Cited
US1829276A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1954-01-22 1954-07-24 1955-01-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1958-01-22 1958-07-24 1959-01-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1962-01-22 1962-07-24 1963-01-23 $7700.00 Window Closed / Lapsed

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