McCORMICK, Chief Judge.
This action is for a declaratory judgment. The relief the plaintiff seeks is a judicial determination that certain radio tuning devices manufactured and sold by plaintiff do not infringe Claims 7 to 11, inclusive, of United States Reissue Letters Patent No. 20,827 applied for by defendant May 23, 1938, and granted to him August 16, 1938, and also that such patent claims are invalid. Issue was joined by defendant's answer and his counterclaim...
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