US PATENT SUBCLASS 359 / 829
.~.~.~ With threads

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}
829.~.~.~ With threads

DEFINITION

Classification: 359/829

With threads:

(under subclass 819) Subject matter having a projecting helical rib.