PATTERSON, District Judge.
The suit is for infringement of two patents to Carlson, 1,776,414 issued September 23, 1930, and 1,931,978 issued October 24, 1933. Both patents relate to apparatus for hoisting plaster or other material in the course of building construction.
The apparatus covered by the first Carlson patent consists of a single mast made up of sections and erected outside the wall of a building under construction, braces tying the mast to the wall...
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