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BECKMAN INSTRUMENTS, INC. v. CHEMTRONICS, INC.

No. 27412.

428 F.2d 555 (1970)

BECKMAN INSTRUMENTS, INC., and Leland C. Clark, Jr., Plaintiffs-Appellants-Cross Appellees, v. CHEMTRONICS, INC. and J. Ryan Neville, Defendants-Appellees-Cross Appellants.

United States Court of Appeals, Fifth Circuit.

Rehearing Denied and Rehearing Denied June 19, 1970.

Attorney(s) appearing for the Case

Bernard Ladon, San Antonio, Tex., Kenway, Jenney & Hildreth, Herbert P. Kenway, L. William Bertelsen, Melvin R. Jenny, Boston, Mass., Frank B. Pugsley, Baker, Botts, Shepherd & Coates, Houston, Tex., Lawrence B. Biebel, Mario A. Martella, Joseph G. Nauman, Dayton, Ohio, for defendants-appellees-cross-appellants.

Bill Durkee, Tom Arnold, John F. Lynch, Houston, Tex., Patrick H. Swearingen, Jr., San Antonio, Tex., for plaintiffs-appellants cross-appellees.

Before GEWIN, THORNBERRY and AINSWORTH, Circuit Judges.

Rehearing Denied and Rehearing En Banc Denied June 19, 1970.

THORNBERRY, Circuit Judge.

This patent appeal concerns two inventions used in electrochemical analysis. Appellant Beckman sued appellee Chemtronics in the court below, requesting an injunction against continued infringement of its patent. Chemtronics replied by denying infringement, challenging the validity of Beckman's patent, raising issues as to ownership...

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