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Patent applications and USPTO patent grants for PYUNGWHA PIPE INDUSTRY INC..The latest application filed is for "rigid ipvc pipe resin composition exhibiting excellent strength and hydrostatic pressure resistance and rigid ipvc pipe".
Patent | Date |
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Rigid IPVC pipe resin composition exhibiting excellent strength and hydrostatic pressure resistance and rigid IPVC pipe Grant 10,023,732 - Lee July 17, 2 | 2018-07-17 |
Rigid Ipvc Pipe Resin Composition Exhibiting Excellent Strength And Hydrostatic Pressure Resistance And Rigid Ipvc Pipe App 20160046800 - LEE; Jong-Tae | 2016-02-18 |
Pipe Having Resistance To Both Fire And Cold App 20150323105 - LEE; Jong-Tae | 2015-11-12 |
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