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KESZTHELYI v. DOHENY STONE DRILL CO.

No. 6688.

59 F.2d 3 (1932)

KESZTHELYI v. DOHENY STONE DRILL CO. et al.

Circuit Court of Appeals, Ninth Circuit.

Rehearing Denied June 24, 1932.

Attorney(s) appearing for the Case

Charles C. Montgomery and Fred Mansur, both of Los Angeles, Cal., for appellant.

Wellborn & Wellborn and William L. Connor, all of Los Angeles, Cal., for appellees.

Before WILBUR and SAWTELLE, Circuit Judges.

WILBUR, Circuit Judge.

This is an appeal from a final decree of the District Court in favor of appellees in a suit in equity for infringement of letters patent No. 1,474,905 issued to appellant on November 20, 1923, for a new and useful improvement in tool joints used in rotary drilling of oil wells.

In his patent specifications appellant explains that in rotary drilling the bit cutting the formation is carried at the lower end of the string of drill pipe...

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