WILBUR, Circuit Judge.
The five patents involved in this litigation all relate to a device which the appellant characterizes as a "tractor-and-fairlead-trailer equipment", which may be more properly characterized as a portable jib crane.
The plaintiff, Willamette-Hyster Company, appellant, and the defendant, Pacific Car and Foundry Company, appellee, are both manufacturers of such cranes for use in the logging industry. The cranes...
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