KEECH, District Judge.
This is an action to compel issuance of a patent for a portable hydraulic power device to control the operation of a vertical stopper in the nozzle of a bottom-pouring ladle for pouring molten metal, specifically, molten steel. By means of applicant's device the stopper may be raised and lowered, or stopped instantaneously and accurately at any desired position, by use of a push button control at the end of a flexible cable, which affords the...
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