OPINION
W. ARTHUR GARRITY, Jr., District Judge.
This case arises under the patent laws of the United States and especially those statutes, 35 U.S.C. §§ 101-103, which define the standard of patentable invention. Plaintiff, a large electronics corporation which has developed and marketed a system for automatically identifying railroad cars, seeks a declaration that its system does not infringe Patent No. 3,145,921 (hereinafter "Brainerd patent"...
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