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  5. 282 U.S. 175 (1930)
 

POWERS-KENNEDY CO. v. CONCRETE CO.

Nos. 3 and 4.

282 U.S. 175 (1930)

POWERS-KENNEDY CONTRACTING CORPORATION ET AL. v. CONCRETE MIXING AND CONVEYING COMPANY. CONCRETE MIXING AND CONVEYING COMPANY v. R.C. STORRIE & COMPANY.

Supreme Court of United States.

Reargued October 24, 1930.

Decided December 15, 1930.

Attorney(s) appearing for the Case

Messrs. John D. Morgan and Alan M. Johnson for the Powers-Kennedy Contracting Corporation et al.

Messrs. Stephen J. Cox and Lynn A. Williams, with whom Messrs. Clifford C. Bradbury and Albert G. McCaleb were on the brief, for the Concrete Mixing & Conveying Company.

Mr. Charles E. Townsend for R.C. Storrie & Company.

MR. JUSTICE ROBERTS delivered the opinion of the Court.

These cases involve the validity, and the alleged infringement, of letters patent No. 1,127,660, of date February 9, 1915, isued to John H. McMichael, and assigned to Concrete Mixing and Conveying Company.

The Court of Appeals of the Second Circuit, in Concrete Mixing and Conveying Company v. Ulen Contracting Corporation, 12 F.2d 929, held the patent valid...

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