COXE, District Judge.
This is a suit for alleged infringement of the two Caccia patents, Nos. 2,059,774 and 2,077,353, for methods for constructing subways. Patent No. 2,059,774 was issued on November 3, 1936, on an application filed on April 3, 1936; patent No. 2,077,353 on April 13, 1937, on an application filed on November 2, 1936. Claims 5, 7, 11, 16, 17 and 20 of Patent No. 2,059,774, and Claim 1 of Patent No. 2,077,353, are in issue.
The principal defenses...
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