COLEMAN, Chief Judge.
This is a patent infringement case involving patent No. 2,543,696, for high frequency transmission cable, issued February 27, 1951, to the plaintiff, the American Phenolic Corporation, as assignee of R. J. Krueger, inventor.
The plaintiff is an Illinois corporation with principal place of business in Chicago, and manufactures high frequency transmission cable for use in television installations. One of the defendants, the Plastoid Corporation...
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