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US2927345A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for casting gelatin upon a cooled drum including drum warp compensating means

Assignee: Wyeth Holdings LLC
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Filing: 1955-06-13
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Granted: 1960-03-08
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Expires: 1975-06-13
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Abstract

No abstract record available.

Inventors

  • 👤 Hansen Lloyd Frank
  • 👤 Stearns Carl Louis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 18:08
CPC Classifications
A; A61; A61J; A61J3/00; A61J3/07; Y; Y10; Y10S; Y10S264/00; Y10S264/37

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

GB368886A Cited
US2346784A Cited
US2346764A Cited
US2292760A Cited
US2345674A Cited
US2349511A Cited
US2643416A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1963-03-08 1963-09-07 1964-03-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1967-03-08 1967-09-07 1968-03-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1971-03-08 1971-09-07 1972-03-08 $7700.00 Window Closed / Lapsed

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