Retractable vent and cover arrangement for down draft cooking ap
Retro-fit barbecue grill drive
Retrofit table accessory for barbecue grill
Retrofittable energy conserving damper
Reusable cold pack for medical usage
Reusable fire starter and method of use
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
Reversible burner grate
Reversible window for solar heating and cooling
Ribbon-type, gas-fired burner head
Ridged surface solar heater
Rim-drive cable-aligned heliostat collector system
Roaster
Roaster frame or rack lifter
Rock heater for sauna
Roll-up barbecue apparatus
Roof