Legal Opinion

Henderson v. Welch Dry Kiln Co.

District Court, E.D. Louisiana

Decided June 6, 1928No. 18840PublishedCited by 5 opinions

1Opinion of the Court

BURNS, District Judge.

Plaintiffs’ bill of complaint alleges infringement by defendant of their United States patent No. 1,422,202 for improvements in dry kilns designed for drying lumber. Their letters patent, dated July 11, 1922, called hereinafter the Henderson patent, comprise some 30 claims, but the plaintiffs elect to stand upon the alleged infringement of claim 4.

Defendants deny infringement, allege invalidity, and plead estoppel by conduct in bar of plaintiffs’ suit. Its kilns are built under United States patent No. 1,517,928, dated December 2, 1924, hereinafter called the Welch…

2Cases cited15 opinions

  1. Boyden Power-Brake Co. v. Westinghouse Westinghouse v. Boyden Power-Brake Co.Supreme Court of the United States · 1898
  2. National Hollow Brake-Beam Co. v. Interchangeable Brake-Beam Co.Court of Appeals for the Eighth Circuit · 1901
  3. Knapp v. MorssSupreme Court of the United States · 1893
  4. Noonan v. Chester Park Athletic Club Co.Court of Appeals for the Sixth Circuit · 1900
  5. Leader Plow Co. v. Bridgewater Plow Co.Court of Appeals for the Fourth Circuit · 1916

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3Cited by5 opinions

  1. Bryan W. Nickerson, Jr. v. The Bearfoot Sole Company, Inc., the Bearfoot Airway Corporation,defendants-AppellantsCourt of Appeals for the Sixth Circuit · 1963
  2. Grant v. KopplCourt of Appeals for the Ninth Circuit · 1938
  3. National Rolled Thread Die Co. v. E. W. Ferry Screw Products, Inc.Court of Appeals for the Sixth Circuit · 1976
  4. The National Rolled Thread Die Company v. E. W. Ferry Screw Products, Inc., the National Rolled Thread Die Company, Plaintiff-Cross-Appellee. v. E. W. Ferry Screw Products, Inc., Defendants-Cross-AppellantsCourt of Appeals for the Sixth Circuit · 1976
  5. Aquatech Corporation dba United Aqua Group v. Sunstone Pools & Outdoor Living LLCDistrict Court, D. Nevada · 2025

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