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DETROLA RADIO & TELEVISION CORP. v. HAZELTINE CORP.

No. 666.

313 U.S. 259 (1941)

DETROLA RADIO & TELEVISION CORP. v. HAZELTINE CORPORATION.

Supreme Court of United States.

Decided May 12, 1941.

Attorney(s) appearing for the Case

Mr. Samuel E. Darby, Jr., with whom Mr. Floyd H. Crews was on the brief, for petitioner.

Mr. William H. Davis, with whom Messrs. R. Morton Adams and George E. Faithfull were on the brief, for respondent.

MR. JUSTICE ROBERTS delivered the opinion of the Court.

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 10.1

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