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CHANCE v. LEHIGH NAV. COAL CO.

No. 9637.

25 F.Supp. 532 (1938)

CHANCE et al. v. LEHIGH NAV. COAL CO.

District Court, E. D. Pennsylvania.

October 11, 1938.

Attorney(s) appearing for the Case

John H. Austin, Wallace D. Newcomb, and Henry N. Paul, Jr., all of Philadelphia, Pa., Merrell E. Clark, of New York City, and Hugh M. Morris, of Wilmington, Del., for plaintiffs.

Dexter N. Shaw and Charles H. Howson, both of Philadelphia, Pa., for defendant.

KIRKPATRICK, District Judge.

This is a suit in equity for the infringement of a group of six patents having to do with process or apparatus for washing anthracite coal. They are all for improvements upon what is conceded to be a basic patent involving invention of a high order — No. 1,224,138 to Chance, which expired in 1934 and is not in suit. The invention of that patent lay in creating in a washing tank an "artificial" fluid mass, consisting of an agitated...

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