Legal Opinion

Armstrong v. De Forest Radio Telephone & Telegraph Co.

District Court, S.D. New York

Decided May 17, 1921PublishedCited by 14 opinions

In Equity. Suit by Edwin H. Armstrong and another against the De Eorest Radio Telephone & Telegraph Company for infringement of claims 1-3, 5, 8, 9, 12, and 14-18 of letters patent, ,No. 1,113,149, of October 6, 1914, on application filed October 29, 1913, issued to Edwin H. Armstrong for “wireless receiving system.”

1Opinion of the Court

MAYER, District Judge.

This is a suit of major importance. It concerns an invention of high merit, and the cause has been presented *446ably and comprehensively. While the record is voluminous, it differs from some long records in that, by reason of the issues of fact involved, its length is fully justified. The defenses are many, but the principal attacks are directed against- the priority of Armstrong. It is claimed for Armstrong that his date of invention is at least as early as January 31, 1913, and thus antedates Schloemilch and Von Bronk, infra, Meissner, infra, and De Forest, infra. Before…

2Cited by14 opinions

  1. Radio Corp. of America v. Radio Engineering Laboratories, Inc.Supreme Court of the United States · 1934
  2. Westinghouse Electric & Mfg. Co. v. Precise Mfg. Corp.Court of Appeals for the Second Circuit · 1926
  3. Westinghouse Electric & Mfg. Co. v. De Forest Radio Telephone & Telegraph Co.Court of Appeals for the Third Circuit · 1927
  4. Armstrong v. De Forest Radio Telephone & Telegraph Co.Court of Appeals for the Second Circuit · 1926
  5. De Forest Radio Telephone & Telegraph Co. v. Westinghouse Electric & Mfg. Co.District Court, E.D. Pennsylvania · 1924

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