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ARNOLD PIPE RENTALS CO. v. ENGINEERING ENTERPRISES, INC.

No. 21720.

350 F.2d 885 (1965)

ARNOLD PIPE RENTALS COMPANY, Inc., Appellant, v. ENGINEERING ENTERPRISES, INC., Appellee.

United States Court of Appeals Fifth Circuit.

On Petition to Reopen Decision August 24, 1965.

Attorney(s) appearing for the Case

George C. Helmig, Houston, Tex., Edward A. Haight, Chicago, Ill., Andrews, Kurth, Campbell & Jones, Houston, Tex., Haight, Simmons & Hofeldt, Chicago, Ill., for appellant.

James B. Simms, W. H. Skipwith, Jr., Marvin B. Eickenroht, Browning, Simms, Hyer & Eickenroht, Houston, Tex., for appellee.

Before BROWN and GEWIN, Circuit Judges, and KILKENNY, District Judge.

GEWIN, Circuit Judge:

In this patent infringement suit, the district court held the claims in issue valid and infringed, and the alleged infringer appeals. We affirm the district court on both issues.

The claims of the patent in suit1 teach the construction of a drill collar used in rotary bit drilling of oil and gas wells. Each collar has a plurality of spiral grooves around its outside surface. The presence of this shallow groove...

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