DENMAN, Circuit Judge.
This is an appeal from an interlocutory judgment of the United States District Court for the Southern District of California holding claims 1, 4 and 11 of the patent to N. K. Smith No. 1,871,825, issued August 16, 1932, valid and infringed.
The patent in suit is for side door elevators of the type used in the raising and lowering of well casing, tubing, and the like, in the operation of drilling a well and maintaining the same in production...
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