De Laval Separator Co. v. Iowa Dairy Separator Co.
Court of Appeals for the Eighth Circuit
Appeal from the Circuit Court of the United States for the Northern District of Iowa. Bill in equity by the De Laval Separator Company against the Iowa Dairy Separator Company. From a decree dismissing the bill, complainant appeals.
1Opinion of the Court
SANBORN, Circuit Judge.
This is an appeal from a decree which dismissed a bill for the infringement of claims Nos. 4, 5, 6, 7, and 8 of letters patent No. 892,999, for improvements in liners for centrifugal bowls for separating cream from milk, issued to Fredrik Ljungstrom on July' 14, 1908, upon an application filed January 18, 1905. The complainant claimed that Ljungstrom was entitled to the date of the filing of his application for a Swedish patent for the same invention, which was January 27, 1905. The defenses were: First, that in the fall of 1903 three centrifugal bowls, which were…
2Cases cited12 opinions
- The Barbed Wire PatentSupreme Court of the United States · 1892
- Tilghman v. ProctorSupreme Court of the United States · 1888
- Kimberly v. ArmsSupreme Court of the United States · 1889
- National Hollow Brake-Beam Co. v. Interchangeable Brake-Beam Co.Court of Appeals for the Eighth Circuit · 1901
- Furrer v. FerrisSupreme Court of the United States · 1892
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3Cited by14 opinions
- Roberts v. RobertsCourt of Appeals for the Eighth Circuit · 1915
- Schlafly v. United StatesCourt of Appeals for the Eighth Circuit · 1925
- Boyle v. RoussoCourt of Appeals for the Eighth Circuit · 1926
- Nichols v. ElkenCourt of Appeals for the Eighth Circuit · 1915
- Searchlight Horn Co. v. Victor Talking Mach. Co.District Court, D. New Jersey · 1919
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