US PATENT SUBCLASS 362 / 178
.~.~.~ Tube structure

Current as of: June, 1999
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362 /   HD   ILLUMINATION

157  DF  SELF POWERED LAMP {16}
159  DF  .~ Nonelectric {9}
171  DF  .~.~ Tubular type {4}
178.~.~.~ Tube structure

DEFINITION

Classification: 362/178

(under subclass 171) Subject matter wherein details of the tube construction is enumerated.