MANTON, Circuit Judge.
The appellant had issued to him letters patent No. 14,746, which were granted on the reissue of October 28, 1919, on an application filed February 28, 1919. It is for a dry pipe valve used in a sprinkler system. The claims sued upon are claims 1, 2, 3, 4, and 7. The automatic sprinkler system is an apparatus for automatically distributing water upon a fire, for the purpose of checking or extinguishing it. The water is led under pressure to such...
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