Legal Opinion
Hazeltine Research v. General Motors Corporation
Court of Appeals for the Sixth Circuit
Decided October 19, 1948No. 10597PublishedCited by 21 opinions
1Opinion of the Court
SIMONS, Circuit Judge.
As against the defense of invalidity based upon lack of invention, the appellant failed in its suit for infringement of two patents in the radio art. They are Wheeler No. 1,951,685, for a “Peak Detector,” issued March 20, 1934, and Wheeler No. 2,041,-273, issued May 19, 1936, for “Amplifier Volume Control.” The complaints alleging infringement were filed in 1941 by the Hazeltine Corporation but the appellant, as present owner, was later substituted as plaintiff and the cases consolidated for trial.
Both patents in suit derive from an application filed by Wheeler on July…
2Cases cited17 opinions
- Loom Co. v. HigginsSupreme Court of the United States · 1882
- Railway Co. v. SaylesSupreme Court of the United States · 1878
- Permutit Co. v. Graver Corp.Supreme Court of the United States · 1931
- Muncie Gear Works, Inc. v. Outboard, Marine & Manufacturing Co.Supreme Court of the United States · 1942
- General Talking Pictures Corp. v. Western Electric Co.Supreme Court of the United States · 1938
12 more not listed; retrieve them via the Exa API.
3Cited by21 opinions
- Sol A. Dann, John H. Neville and Louise A. Turek v. Studebaker-Packard Corporation, Harold E. Churchill, Hugh J. Ferry, and A. J. PortaCourt of Appeals for the Sixth Circuit · 1961
- Harries v. Air King Products Co., IncCourt of Appeals for the Second Circuit · 1950
- Nat Yanish v. Bruce G. Barber, District Director of Immigration and Naturalization ServiceCourt of Appeals for the Ninth Circuit · 1956
- Coats Loaders & Stackers, Inc. v. HendersonCourt of Appeals for the Sixth Circuit · 1956
- E. Ward King and Myrtle C. King v. Commissioner of Internal RevenueCourt of Appeals for the Sixth Circuit · 1972
16 more not listed; retrieve them via the Exa API.