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TSCHAPPAT v. HINDERLITER TOOL CO.

No. 1668.

98 F.2d 994 (1938)

TSCHAPPAT et al. v. HINDERLITER TOOL CO.

Circuit Court of Appeals, Tenth Circuit.

Rehearing Denied October 22, 1938.

Attorney(s) appearing for the Case

Jack A. Schley, of Dallas, Tex., and Robert M. Rainey, of Oklahoma City, Okl. (Rainey, Flynn, Green and Anderson, of Oklahoma City, Okl., on the brief), for appellants.

Alexander C. Mabee, of Chicago, Ill. (Russell R. Hays, of Tulsa, Okl., and Charles W. Hills and Charles F. Meroni, both of Chicago, Ill., on the brief), for appellee.

Before PHILLIPS, BRATTON, and WILLIAMS, Circuit Judges.

PHILLIPS, Circuit Judge.

Tschappat and Callahan brought this suit against the Hinderliter Tool Company for alleged infringement of claims 1, 4 and 5, and 2, 6 and 7 of patent number 1,830,893. The application was filed June 18, 1928, as a continuation of application serial number 88,272 filed February 15, 1926.

The patent covers a tubing hanger used in connection with oil wells and includes means for sealing the opening between the tubing and the casing.<...

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