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US2229519A Expired / Lapsed US ⏱️ 0.0 years remaining

Releasing pump plunger

Assignee: WILLIE DOROTHY PATE
•
Filing: 1937-08-02
•
Granted: 1941-01-21
•
Expires: 1957-08-02
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Abstract

No abstract record available.

Inventors

  • 👤 James A Pate
  • 👤 Clyde L Pate

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 11:27
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/10; F04B53/12; F04B53/122

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) 1944-01-21 1944-07-22 1945-01-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1948-01-21 1948-07-22 1949-01-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1952-01-21 1952-07-22 1953-01-21 $7700.00 Window Closed / Lapsed

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