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ASHCRAFT v. NATIONAL THEATRE SUPPLY CO.

No. 4504.

108 F.2d 828 (1940)

ASHCRAFT v. NATIONAL THEATRE SUPPLY CO. et al.

Circuit Court of Appeals, Fourth Circuit.

January 9, 1940.

Attorney(s) appearing for the Case

Samuel E. Darby Jr., of New York City (Cook & Markell, of Baltimore, Md., and Darby & Darby, and Floyd H. Crews, all of New York City, on the brief), for appellant.

Clair V. Johnson, of New York City (J. Calvin Carney, of Baltimore, Md., and L. A. Watson and E. R. Helferich, both of New York City, on the brief), for appellees.

Before PARKER and SOPER, Circuit Judges, and DOBIE, District Judge.

SOPER, Circuit Judge.

This appeal was taken from a decree dismissing the bill of complaint in a suit for infringement of United States patent No. 1,983,430, issued December 4, 1934, to Clarence S. Ashcraft on an application filed April 16, 1934. The patent relates to a method of producing an electric arc for use in motion picture projectors, search lights, &c. It has been common practice in the art for many years to produce such an arc by sending an electric current...

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