CURTIS, District Judge.
The plaintiffs are the owners of a reissued United States patent No. 25,122 and bring this action to enjoin the defendants from an alleged infringement thereof. Plaintiffs' device is a mouth-piece for use in an aqualung underwater diving device. An aqualung is a well known, much used underwater diving apparatus consisting of a compressed air tank and regulator attached thereto with a connecting hose as a means of supplying air from the compressed...
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