76549751
Sep 5, 2003
May 1, 2007
Plastics underground drainage, infiltration, seepage or leach containers and systems for the retension and dispersal of waste water, storm water and rain water; plastics porous or perforated plastic drainage pipes and porous or perforated plastics modular containers for plastic underground drainage, infiltration, seepage or leach containers and systems for the retention and dispersal of waste water, storm water and rain water
Nonmetallic Building Materials