Portable solar oven and grill

Prefabricated ventilating panel including heat transfer means

Prismatic solar reflector apparatus and method of solar tracking

Process of and apparatus for solar heating and the like

Pyramidal solar heater

Radiant energy collector

Radiant energy collector

Radiant energy collector panel and system

Radiant heat collector

Radiation cooling devices and processes

Raised-level built-in cooking appliance

Raised-level built-in cooking appliance

Recirculating natural convection solar energy collector

Reducing heat loss from the energy absorber of a solar collector

Reflective solar heat collector

Reflector oven

Reinforced structural panel with integral solar energy collectin

Sea shell solar collector

Selective solar energy absorption

Servo tracking apparatus