79090051
Oct 13, 2010
Feb 21, 2012
Machines for refining biogas; plants for refining biogas consisting primarily of biogas generation systems primarily comprised of biogas generators, purification equipment, process equipment, piping, heat exchangers, digesters, process controls, tanks and pumps
MachineryInstallations for treatment of waste sludge, bioreactors for use in the treatment of waste sludge and waste sludge treatment tanks
Environmental Control ApparatusBuilding construction for the production of biogas; installation services, namely, installation of biogas generation systems
Building Construction and Repair