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SKINNER BROS. BELTING CO. v. OIL WELL IMPROVEMENTS CO.

No. 490.

54 F.2d 896 (1931)

SKINNER BROS. BELTING CO. v. OIL WELL IMPROVEMENTS CO.

Circuit Court of Appeals, Tenth Circuit.

December 24, 1931.

Attorney(s) appearing for the Case

Joe T. Dewberry, of Tulsa, Okl. (G. W. Earnshaw, of Joplin, Mo., on the brief), for appellant.

Gilbert P. Ritter, of Washington, D. C. (John A. Haver, of Tulsa, Okl., Ritter, Mechlin & O'Neill, of Washington, D. C., and Randolph, Haver, Shirk & Bridges, of Tulsa, Okl., on the brief), for appellee.

Before COTTERAL and McDERMOTT, Circuit Judges, and POLLOCK, District Judge.

McDERMOTT, Circuit Judge.

The defendant appeals from a decree adjudging claims 1 and 2 of patent to Heggem, 1,175,261, and claims 1, 2, 3, 4, and 12, of Heggem patent 1,256,899 valid and infringed. Both patents involve a device for sealing a drilling oil well so that the drilling cable may operate through the device and at the same time prevent oil from escaping at the mouth of the well.

The validity of the patents, and the range of equivalency accorded them...

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