Process and apparatus for solar energy collection and retrieval
Process and device for utilizing meteorological radiations
Process for restoring the temperature of precooked dishes, trans
Protective cooling system for solar heat collector
Pumping and heating device
Pyramidal solar heating system
Pyrogen and canister incorporating pyrogen
Rechargeable self-heating food container
Recycling air mixer for heater unit
Reflective device
Refrigerant charged solar water heating structure and system
Reusable heat pack containing supercooled solution and means for
Reusable warmers of the type employing a super-cooled solution a
Reusable warmers of the type employing a super-cooled solution a
Reusable warmers of the type employing a super-cooled solution a
Ridged surface solar heater
Roof-lens solar collector
Roof-mountable chamber and conduit device for solar heat collect
Roofing torch
Roofing torch