US PATENT SUBCLASS 126 / 690
.~.~.~ Parabolic
Current as of:
June, 1999
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126 /
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STOVES AND FURNACES
569
DF
SOLAR HEAT COLLECTOR
{18}
684
DF
.~ With concentrating reflector {5}
688
DF
.~.~ Spot focus {3}
690
.~.~.~ Parabolic
DEFINITION
Classification: 126/690
Parabolic:
(under subclass 688) Apparatus wherein the first surface is shaped like a plane curve generated by a point so moving that its distance from a fixed point divided by its distance from a fixed line is equal to one. [figure]