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LASER ALIGNMENT, INC. v. WOODRUFF & SONS, INC.

Nos. 72-1254, 72-1255.

491 F.2d 866 (1974)

LASER ALIGNMENT, INC., and Contractors Automated Devices, Inc., Plaintiffs-Appellants, v. WOODRUFF & SONS, INC., and Roy J. Woodruff, Defendants-Appellees.

United States Court of Appeals, Seventh Circuit.

Decided January 22, 1974.

Attorney(s) appearing for the Case

Donald H. Zarley, Des Moines, Iowa, Lloyd A. Heneveld, Grand Rapids, Mich., for plaintiffs-appellants.

Eugene C. Knoblock, South Bend, Ind., for defendants-appellees.

Before CLARK, Associate Justice, and FAIRCHILD and PELL, Circuit Judges.

PELL, Circuit Judge.

Plaintiffs Laser Alignment, Inc., (Alignment) and Contractors Automated Devices, Inc., (Contractors) brought this patent infringement action against Woodruff & Sons, Inc., (Woodruff) and Roy J. Woodruff, alleging infringement of Trice Patent No., 3,116,557, owned by Contractors and licensed exclusively to Alignment. The Trice patent, issued January 7, 1964, and entitled "Method and Means for Laying Sewer Pipe," involves, in the words of the...

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