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YOUNG v. JOHN McSHAIN, INC.

No. 4943.

130 F.2d 31 (1942)

YOUNG et al. v. JOHN McSHAIN, Inc., et al.

Circuit Court of Appeals, Fourth Circuit.

August 18, 1942.

Attorney(s) appearing for the Case

Ralph L. Chappell, of Kalamazoo, Mich. (Earl & Chappell, of Kalamazoo, Mich., Charles Markell and Cook & Markell, all of Baltimore, Md., on the brief), for appellants.

Otto R. Barnett, of Chicago, Ill. (Lawrence T. Barnett and Barnett & Truman, all of Chicago, Ill., and Edwin F. Samuels. Galvin & McCourt, and Edward L. Ward, all of Baltimore, Md., on the brief), for appellees.

Before PARKER, SOPER, and DOBIE, Circuit Judges.

PARKER, Circuit Judge.

This is an appeal in a patent infringement suit involving Young patents Nos. 1,928,748 and 1,938,887. The defenses were invalidity and non-infringement; and the court below held both patents invalid as to the claims in suit.

Both patents are combination patents relating to concrete floor construction with the use of pre-fabricated concrete joists reinforced with steel. Patent No. 1,928,748 covers the combination of a plurality of pre...

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