Legal Opinion
Detrola Radio & Television Corp. v. Hazeltine Corp.
Supreme Court of the United States
Decided May 12, 1941No. 666PublishedCited by 37 opinions
1Opinion of the CourtJustice Roberts
July 7, 1927, Harold A. Wheeler applied for a patent for a circuit designed automatically to control the amplitude of amplified signal voltage in modulated carrier-current signalling systems. Patent No. 1,879,863 issued September 27, 1932, to the respondent as assignee of Wheeler.
A suit was brought in the Eastern District of New York for infringement of Claims 1,.5, 6, and.10. The District Court held the claims invalid for want of invention. The Circuit Court of Appeals for the Second Circuit affirmed the decree. 2. September 26, 1934, while the appeal to the Circuit Court of Appeals was…
2Cases cited4 opinions
- Alexander Milburn Co. v. Davis-Bournonville Co.Supreme Court of the United States · 1926
- Detrola Radio & Televison Corp. v. Hazeltine Corp.Court of Appeals for the Sixth Circuit · 1940
- Hazeltine Corporation v. AbramsCourt of Appeals for the Second Circuit · 1935
- Hazeltine Corporation v. AbramsDistrict Court, E.D. New York · 1934
3Cited by37 opinions
- Marconi Wireless Co. v. United StatesSupreme Court of the United States · 1943
- Marconi Wireless Telegraph Company of America v. United StatesSupreme Court of the United States · 1943
- Western States MacH. Co. v. S. S. Hepworth Co.Court of Appeals for the Second Circuit · 1945
- Application of Robert J. HarryCourt of Customs and Patent Appeals · 1964
- Radtke Patents Corporation v. CoeCourt of Appeals for the D.C. Circuit · 1941
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