Legal Opinion
Esther Marion Armstrong v. Motorola, Inc.
Court of Appeals for the Seventh Circuit
Decided March 22, 1967No. 14830_1PublishedCited by 29 opinions
1Opinion of the Court
CUMMINGS, Circuit Judge.
This patent infringement action concerns three frequency modulation (FM) patents owned by the late Major Edwin Armstrong. The plaintiff is his widow and executrix.
The three patents involved are No. 1,941,069 (’069) covering the wideband FM system, No. 1,941,066 (’066) covering the synchronous heterodyne method for FM reception, and reissue patent No. 21,660 (’660) covering a preemphasis and deemphasis system for use in FM. The ’069 and ’066 patents issued on December 26, 1933, and reissue patent ’660 issued on December 17, 1940.
In an exhaustive opinion, District Judge…
2Cases cited24 opinions
- Aro Manufacturing Co. v. Convertible Top Replacement Co.Supreme Court of the United States · 1964
- Radio Corp. of America v. Radio Engineering Laboratories, Inc.Supreme Court of the United States · 1934
- United States v. Univis Lens Co.Supreme Court of the United States · 1942
- General Talking Pictures Corp. v. Western Electric Co.Supreme Court of the United States · 1938
- Hildreth v. MastorasSupreme Court of the United States · 1921
19 more not listed; retrieve them via the Exa API.
3Cited by29 opinions
- A.C. Aukerman Company v. R.L. Chaides Construction Co.Court of Appeals for the Federal Circuit · 1992
- Billy K. Watkins v. Northwestern Ohio Tractor Pullers Association, Inc.Court of Appeals for the Sixth Circuit · 1980
- Studiengesellschaft Kohle Mbh, as Trustee for the Max-Planck-Institut Fur Kohlenforschung v. Eastman Kodak CompanyCourt of Appeals for the Fifth Circuit · 1980
- Advanced Hydraulics, Inc. v. Otis Elevator CompanyCourt of Appeals for the Seventh Circuit · 1975
- Edward T. Molinaro and Anthony P. Catanzaro v. Fannon/courier Corp.Court of Appeals for the Federal Circuit · 1984
24 more not listed; retrieve them via the Exa API.