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US1949150A Expired / Lapsed US ⏱️ 0.0 years remaining

Safety valve

Assignee: CONS ASHCROFT HANCOCK CO
•
Filing: 1931-03-19
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Granted: 1934-02-27
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Expires: 1951-03-19
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Abstract

No abstract record available.

Inventors

  • 👤 Albert D Eplett

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 17:11
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/08; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7739; Y10T137/7741; Y10T137/7744; Y10T137/7745; Y10T137/7747; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7766; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7923

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) 1937-02-26 1937-08-28 1938-02-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1941-02-26 1941-08-28 1942-02-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1945-02-26 1945-08-28 1946-02-27 $7700.00 Window Closed / Lapsed

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