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GRINNELL CORPORATION v. VIRGINIA ELECTRIC & POWER COMPANY

No. 12018.

401 F.2d 451 (1968)

GRINNELL CORPORATION, Appellant, v. VIRGINIA ELECTRIC & POWER COMPANY, Stone & Webster Engineering Corporation, Bergen Pipesupport Corporation, Bergen Paterson Pipesupport Corporation, Bergen Iron and Engineering Company, Inc., Appellees.

United States Court of Appeals Fourth Circuit.

Decided September 11, 1968.

Attorney(s) appearing for the Case

W. Brown Morton, Jr., New York City (McLean, Morton & Boustead, New York City, Sewall P. Bronstein, and Dike, Thompson & Bronstein, Boston, Mass., David D. McKenney, Providence, R. I.; Charles W. Laughlin, and Christian, Barton, Parker, Epps & Brent, Richmond, Va., on brief) for appellant.

David W. Plant, New York City (Harry R. Pugh, Jr., and Fish, Richardson & Neave, Francis J. Pisarra, and Henderson, Pisarra & Nolan, New York City, Lewis T. Booker, and Hunton, Williams, Gay, Powell & Gibson, Richmond, Va., on brief) for appellees.

Before SOBELOFF, BRYAN and CRAVEN, Circuit Judges.

CRAVEN, Circuit Judge:

Each of the three patents invalidated below relates to an apparatus for automatically moving steam piping to pre-calculated positions so as to avoid intolerable stress caused by expansion and contraction of the pipe reacting to extremes of temperature. The device is basically a servomechanism employing a motorized jack to position the pipe and various devices to detect erroneous positions and activate the jack. The district judge held each patent...

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