HOPKINS, District Judge.
This is a patent infringement suit. The bill alleges infringement of the Irvin Patent 1,481,962, issued January 29, 1924, by defendant because of manufacture and sale of certain gas engines used in tractors and motor trucks.
There are four types of accused engines which differ slightly from each other. It is stipulated that the first type disclosed by drawings, defendant's exhibits Nos. 1, 2, and 3, in so far as the issues herein are...
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