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US2377188A Expired / Lapsed US ⏱️ 0.0 years remaining

Stabilized filter preparations

Assignee: Merck Sharp & Dohme LLC
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Filing: 1941-08-07
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Granted: 1945-05-29
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Expires: 1961-08-07
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Abstract

No abstract record available.

Inventors

  • 👤 Sehwenk Erwin
  • 👤 Edward E Henderson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 16:14
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/34; A61K8/342; A61K8/36; A61K8/365; A61K8/368; A61K8/37; A61K8/49; A61K8/4906; A61K8/4926; A61K8/4973; A61K8/498; A61K8/67; A61K8/676; A61Q; A61Q17/00; A61Q17/04

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1948-05-28 1948-11-27 1949-05-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1952-05-28 1952-11-27 1953-05-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1956-05-28 1956-11-27 1957-05-29 $7700.00 Window Closed / Lapsed

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