PORTERIE, District Judge.
The plaintiff bought the allegedly infringing device from J. Frank Keller, a resident of this District, at his place of business in this District; so follows our jurisdiction. Immediately, the manufacturer, the B. & W., Inc., by stipulation, became the real defendant and J. Frank Keller, the local dealer, went out of the suit. The device is a cement casing centralizer, used in the boring of oil wells.
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