Legal Opinion
Hazeltine Corp. v. Electric Service Engineering Corp.
District Court, S.D. New York
Decided July 1, 1926PublishedCited by 13 opinions
1Opinion of the CourtThacher, District Judge
(after stating the facts as above). The Hazeltine method of neutralizing capacity coupling between two electrical circuits relates primarily to the art of radio reception, although the claims of his first patent are not confined to use in this field. The development of this art by Fleming, De Forest, and Armstrong is shown in Marconi Wireless T. Co. v. De Forest Radio T. & T. Co. (C. C. A.) 243 F. 560, and Armstrong v. De Forest Radio Telephone & Tel. Co. (C. C. A.) 280 F. 584. The use of the audion as a detector by Fleming, its perfection by De Forest, and its employment by Armstrong in his…
2Cases cited7 opinions
- Alexander Milburn Co. v. Davis-Bournonville Co.Supreme Court of the United States · 1926
- Sargent v. Hall Safe & Lock Co.Supreme Court of the United States · 1885
- Electric Railroad Signal Co. v. Hall Railway Signal Co.Supreme Court of the United States · 1885
- Marconi Wireless Telegraph Co. v. De Forest Radio Telephone & Telegraph Co.Court of Appeals for the Second Circuit · 1917
- American Stainless Steel Co. v. Ludlum Steel Co.Court of Appeals for the Second Circuit · 1923
2 more not listed; retrieve them via the Exa API.
3Cited by13 opinions
- Edward B. Marks Music Corp. v. Jerry Vogel Music Co.Court of Appeals for the Second Circuit · 1944
- Hazeltine Corporation v. AH Grebe & Co.District Court, E.D. New York · 1927
- Sigma Engineering Service, Inc. v. Halm Instrument Co.District Court, E.D. New York · 1963
- Berghane v. Radio Corp. of AmericaDistrict Court, D. Delaware · 1947
- Denaro v. Maryland Baking Co.District Court, D. Maryland · 1930
8 more not listed; retrieve them via the Exa API.