US PATENT SUBCLASS 348 / 204
.~.~ Helical element

Current as of: June, 1999
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195  DF  MECHANICAL OPTICAL SCANNING {6}
203  DF  .~ Moving reflector {2}
204.~.~ Helical element

DEFINITION

Classification: 348/204

Helical element:

(under subclass 203) Subject matter in which the reflecting element is of a spiral configuration.