WESTOVER, District Judge.
The Parker Appliance Company is the owner of Parker Patent No. 2,212,183, which said patent covers a tube coupling. A tube coupling is composed of three members: (1) a body, (2) a nut, and (3) a sleeve. Plaintiff admits that the body and the nut are prior art. The validity of the patent depends on the sleeve.
Tube couplings are not new. Tube couplings have been used for many years. Sleeves are not new in tube couplings. In fact, from...
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