KNIGHT, District Judge.
This is an action for patent infringement. Claims numbered 6, 11, 12, 13, and 14 of Patent No. 1,716,962, granted to H. L. Johnson on July 11, 1929, are alleged to be infringed. Defendant denies infringement and alleges invalidity of the patent. It is admitted that Johnson Brothers Engineering Corporation is the exclusive owner of the patent and Johnson Motor Company the exclusive licensee thereof.
The alleged invention is described...
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