Article: Patent No.7,574,886 Issued on Aug. 18, Assigned to Contech Construction Products for helically Corrugated metal Pipe Producing Apparatus (Ohio Inventors)

ALEXANDRIA, Va., Aug. 22 -- William L. Zepp of Maineville, Ohio, and James C. Schluter of Franklin, Ohio, have developed an apparatus for producing helically corrugated metal pipe. The inventors were issued U.S. Patent No. 7,574,886 on Aug. 18.

The patent has been assigned to Contech Construction Products Inc., West Chester, Ohio.

According to the abstract released by the U.S. ...

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