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LAMBERT v. PHILLIPS-LAFITTE CO.

Nos. 3678, 3689, 3690.

23 F.2d 818 (1928)

LAMBERT et al. v. PHILLIPS-LAFITTE CO., Inc. SAME v. LILLY. SAME v. CRAVER.

Circuit Court of Appeals, Third Circuit.

January 9, 1928.

Attorney(s) appearing for the Case

Joshua R. H. Potts and George B. Parkinson, both of Chicago, Ill., and Herman Seid, of Philadelphia, Pa., for appellants.

Kennard N. Ware and Howson & Howson, all of Philadelphia, Pa., for appellees.

Before BUFFINGTON, WOOLLEY, and DAVIS, Circuit Judges.

BUFFINGTON, Circuit Judge.

In the court below the plaintiffs, the owners and sole licensees of patent for a knife sharpener, No. 1,558,187, applied for November 15, 1923, and granted to Lambert October 20, 1925, brought a bill charging infringement thereof. On hearing, the bill was dismissed and the patent held invalid. Thereupon the plaintiffs took this appeal. To determine the rights alleged to have accrued under this patent, we must first ascertain the prior state...

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