US PATENT SUBCLASS 362 / 168
.~.~.~.~ Plural

Current as of: June, 1999
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362 /   HD   ILLUMINATION

157  DF  SELF POWERED LAMP {16}
159  DF  .~ Nonelectric {9}
166  DF  .~.~ Selective wavelength transmitting or light blocking means {2}
167  DF  .~.~.~ With separate movable selective elements {1}
168.~.~.~.~ Plural

DEFINITION

Classification: 362/168

(under subclass 167) Subject matter having more than one lens.