PACIFIC TRANSCONTINENTAL CORPORATION, A CORP. OF CA

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4706488 Method of roll forming cylindrical pipeExpiredNov 01, 85Nov 17, 87[B21D]
4628721 Method of roll forming cylindrical pipeExpiredJul 09, 85Dec 16, 86[B21D]
4606208 Pipe forming apparatusExpiredMay 16, 84Aug 19, 86[B21D]
4577796 Method and apparatus for tracking seam welds on pipes and the likeExpiredOct 10, 84Mar 25, 86[B23K]
4476703 Edge preforming of metal plateExpiredMar 21, 84Oct 16, 84[B21B]
4445357 Pipe pressExpiredNov 03, 80May 01, 84[B21D]
4430913 Cut-off and face machineExpiredMar 23, 82Feb 14, 84[B23B]
4353235 Edge preforming of metal plateExpiredJun 17, 80Oct 12, 82[B21B]
4182160 Hydrostatic pipe testerExpiredJul 31, 78Jan 08, 80[G01M]

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