PHILLIPS, Circuit Judge.
Sage and Boughner brought this suit against the Parkersburg Company for alleged infringement of Patent No. 1,476,648, applied for October 11, 1923, relating to a sand reel mechanism in combination with a standard oil well drilling rig.
The elements of claim one of the patent are:
In combination with a standard well drilling rig including a derrick, a sheave at its top, front and back jack posts, a band wheel shaft and a band...
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