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  5. 952 F.2d 1384 (1992)
 

INTELLICALL, INC. v. PHONOMETRICS, INC.

No. 91-1283.

952 F.2d 1384 (1992)

INTELLICALL, INC., Plaintiff-Appellee, v. PHONOMETRICS, INC., Defendant-Appellant.

United States Court of Appeals, Federal Circuit.

January 9, 1992.

Attorney(s) appearing for the Case

Robert M. Chiaviello, Jr., Baker & Botts, Dallas, Tex., argued, for plaintiff-appellee. With him on the brief were Kevin J. Meeks and Jerry W. Mills. Also on the brief were Thomas H. Adolph, Alan D. Rosenthal and Michael E. Wilson, of Baker & Botts, Houston, Tex.

W. Bryan Farney, Arnold, White & Durkee, Houston, Tex., argued, for defendant-appellant.

Before NIES, Chief Judge, MARSHALL, Associate Justice (Retired), Supreme Court of the United States, sitting by designation, and FRIEDMAN, Senior Circuit Judge.

NIES, Chief Judge.

Phonometrics, Inc., owner of U.S. Patent No. 3,769,463 (the '463 patent), appeals from the summary judgment of the United States District Court for the Northern District of Texas declaring that Intellicall, Inc., had not infringed the '463 patent. We affirm.

I.

BACKGROUND

The '463 patent claims an apparatus for automatically computing and recording the cost of a long-distance telephone call. As described in the specification...

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