DENISON, Circuit Judge.
Infringement suits on Fargo patent, No. 1,329,656, and Parker patent, No. 1,429,369, covering knobs for use in attaching electric wires in position. The patents relate to the now familiar device comprising a porcelain cap and base, provided with suitable grooves on opposing faces to grip and hold electric wires, and having axial holes through which a nail can be driven so that its point enters the wall and its head goes down upon the cap and...
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