De Forest Radio Company v. General Electric Company (283 U.S. 664)
United States Supreme Court
De Forest Radio Company v. General Electric Company
Argued: May 1-4, 1931. --- Decided: May 25, 1931
Rehearing Denied, Opinion Amended Oct. 19, 1931. [1]
Messrs. Samuel E. Darby, Jr., of New York City, and Thomas G. Haight, of Jersey City, N. J., for petitioner.
[Argument of Counsel from pages 665-666 intentionally omitted]
Mr. Ralph B. Evans, of Philadelphia, Pa., for respondent.
[Argument of Counsel from pages 667-669 intentionally omitted]
Mr. Justice STONE delivered the opinion of the Court.
Notes[edit]
- ↑ The order of Oct. 19, 1931, amending the opinion reads as follows:
Ordered, that the opinion in this case be amended as follows:
(1) By substituting for the words 'In July, 1912,' in the twelfth line of the last paragraph of the opinion, as follows: 'August 20, 1912, the earliest date claimed for Langmuir, was rejected rightly, we think, by the District Court, which held that Langmuir was anticipated by Arnold in November, 1912. But before the earlier date,'
(2) By substituting for the third sentence from the end of the opinion, the following: 'By August, 1912, the telegraph company used De Forest amplifying audions at 54 volts, and by November they were used by another at 67 1/2 volts. This was possible only because the tubes had thus been exhausted of gas which would otherwise have ionized with blue glow at from 20 to 30 volts.'
This work is in the public domain in the United States because it is a work of the United States federal government (see 17 U.S.C. 105).
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