Renewable energy systems, namely, heating and cooling systems comprised of heat pumps; [ Apparatus for producing heat and generating steam and gases utilizing solar energy, namely, solar collectors and ] structural component parts, namely, pumps and vacuum pumps

Pumps, namely, [ pneumatic pumps, ] pumps being parts of machines, rotary pumps, [ sump pumps, ] hydraulic pumps, oleodynamic pumps [ ; hydraulic engines and motors except for land vehicles ]