CAMPBELL, District Judge.
This is an action based on the alleged infringement of reissue patent No. 15,627, to George Clements, assignor by direct and mesne assignments of one-half to Clements Manufacturing Company, and one-half to the Hoover Company, for vacuum cleaner, reissued June 12, 1923, on application filed April 30, 1923. Original patent No. 1,392,624, dated October 4, 1921, on application filed June 14, 1911.
The title of the plaintiffs is not questioned...
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