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HONOLULU OIL CORP. v. HALLIBURTON

No. 466.

306 U.S. 550 (1939)

HONOLULU OIL CORP. ET AL. v. HALLIBURTON ET AL.

Supreme Court of United States.

Decided April 17, 1939.

Attorney(s) appearing for the Case

Mr. A.W. Boyken, with whom Mr. A.J. Hill was on the brief, for Honolulu Oil Corp. et al.

Messrs. Leonard S. Lyon and William H. Davis, with whom Messrs. Frederick S. Lyon, Henry S. Richmond, and Ben F. Saye, for Halliburton et al.

MR. JUSTICE BUTLER delivered the opinion of the Court.

This suit presents questions of validity and infringement of Patent No. 1,930,987 applied for February 10, 1926 by Simmons and, after assignment, issued October 17, 1933, to Halliburton. It is for a method and apparatus for testing productivity of formations encountered in oil and other deep wells drilled by the rotary method.

The writs were granted, on petition of defendants Honolulu Oil Corporation,...

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