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Who was the originator of the convoluted pipe flange?

April 26, 2017convoluted flange Originator pipe

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Who was the originator of the convoluted pipe flange?

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Patents were issued to Mr. Wilhem Schulz, Krefeld, Germany around 1972. Gunter Schlicht of Syspac, Inc., Orinda, Ca. USA was the USA/CANADA licensee for same. The license arrangements were made available to Improved Piping Products, Inc. in 1979. In 1997 Gunter Schlicht, of IPP Inc. received additional patents for further convoluted pipe flange improvements.