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MOTOR IMPROVEMENTS v. A. C. SPARK PLUG CO.

No. 6787.

80 F.2d 385 (1935)

MOTOR IMPROVEMENTS, Inc., v. A. C. SPARK PLUG CO.

Circuit Court of Appeals, Sixth Circuit.

As Amended on Granting of Rehearing January 13, 1936.

Attorney(s) appearing for the Case

Nathan L. Miller, of New York City (Clark & Henry, of Bay City, Mich., and Carl M. Owen, Theodore S. Kenyon, and Frederick Bachmann, all of New York City, on the brief), for appellant.

John M. Zane, of Chicago, Ill. (Prewitt Semmes, of Detroit, Mich., and Harold W. Norman and Zane, Morse, Zimmerman & Norman, all of Chicago, Ill., on the brief), for appellee.

Before MOORMAN, HICKS, and ALLEN, Circuit Judges.

MOORMAN, Circuit Judge.

The appellant, a Delaware corporation, is an exclusive licensee under the Sweetland patents, Nos. 1,594,334 and 1,594,335, for oil filters for automobiles. It manufactures the filters covered by the patents, labels them "Purolator," and sells them to manufacturers and users of automobiles. The appellee, a Michigan corporation, is a subsidiary of the General Motors Corporation. In June of 1925, the latter corporation adopted the Sweetland filter...

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