Court of Appeals for the Tenth Circuit March 18, 1941, No. 2113 (Mason Corp. v. Halliburton)

PHILLIPS, Circuit Judge.

The Mason Corporation and Richard C. Mason brought this suit against Erie P. Halliburton and Halliburton Oil Well Cementing Company for alleged infringement of patent No. 1,408,113 applied for January 28, 1921, and granted February 28, 1922, to Richard C. Mason. The defenses were invalidity and noninfringement.

The patent in suit covers a well measuring device.