Court of Appeals for the Fifth Circuit August 7, 1953, 14358_1 (Guiberson Corp. v. Garrett Oil Tools, Inc.)

HUTCHESON, Chief Judge.

The suit was for infringement of Letters Patent No. 2,519,242, issued to Garrett and Peters for a pressure responsive valve.

The claim was that the valve presented a new combination

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of great utility in controlling the flow of gas into a well tubing thousands of feet below ground surface to stimulate the production of oil from the well, and that defendant had infringed