COSGRAVE, District Judge.
Action for infringement of patent No. 1,610,570, applied for October 16, 1924, and issued December 14, 1926. The patent is for new and useful improvement of knockdown and portable combination form and traveler for constructing inclined concrete arches, and the litigation involves the construction of dams.
Dams of the type here involved are made up of a series of arches extending across the course of the stream, supported on buttresses...
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