Quadrex HPS, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4913178 Process and apparatus for removing PCB's from electrical apparatusExpiredAug 18, 88Apr 03, 90[B08B]
4878931 Two stage vapor recovery systemExpiredAug 29, 88Nov 07, 89[F25J]
4865061 Decontamination apparatus for chemically and/or radioactively contaminated tools and equipmentExpiredJul 22, 83Sep 12, 89[B08B]
4842746 Method of removing toxic agents for trichlorotrifluoroethaneExpiredJun 16, 86Jun 27, 89[B01D]
4797128 Method of and apparatus for cleaning garments and soft goods contaminated with nuclear, chemical and/or biological contaminantsExpiredDec 10, 84Jan 10, 89[B08B]
4790337 Apparatus for removing PCB's from electrical apparatusExpiredOct 09, 87Dec 13, 88[B08B]
4781041 Apparatus for cleaning garments and soft goods contaminated with nuclear, chemical and/or biological contaminantsExpiredOct 27, 86Nov 01, 88[D06F]
4685972 Process for removing PCB's from electrical apparatusExpiredJul 18, 84Aug 11, 87[B08B]
4630625 Tool decontamination apparatusExpiredApr 29, 83Dec 23, 86[B05B, B08B]
4503577 Pipe and hose decontamination apparatusExpiredJun 14, 82Mar 12, 85[B08B]

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