US PATENT SUBCLASS 359 / 830
.~.~.~ With ring

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

642  DF  LENS {32}
811  DF  .~ With support {6}
819  DF  .~.~ Lens mounts {6}
830.~.~.~ With ring

DEFINITION

Classification: 359/830

With ring:

(under subclass 819) Subject matter having a circular band for holding, connecting, packing, sealing, etc.