Collimating solar radiation collector

Cooking appliance

Cooking device with convection powered fan and water reservoir

Corrugated cover plate for flat plate collector

Cover for cooking kettles

Cylindrical radiant energy direction device with refractive medi

Device for mounting cooking apparatus

Device for receiving or emitting radiation energy

Device for synchronously rotating solar collectors

Double-walled cover for cooking food

Dwellings equipped with a room-heating device and hot water feed

Easy access energy conversion panels for solar heating systems

Expansible cyclone stove

Extra-focal, convective suppressing solar collector

Fibrous wall material for cell structures of solar energy collec

Flat plate solar collector

Flat plate solar collector system

Flat solar collector

Flat-plate solar collector with air flowing through the grooves

Floatable ball