US PATENT SUBCLASS 359 / 684
.~.~.~ Other than first group moves for focusing (internal focus type)

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

642  DF  LENS {32}
676  DF  .~ With variable magnification (e.g., zoom type ) {6}
683  DF  .~.~ With mechanical compensation {6}
684.~.~.~ Other than first group moves for focusing (internal focus type)

DEFINITION

Classification: 359/684

Other than first group moves for focusing (internal focus type):

(under subclass 683) Subject matter where other than the first assembly of components is moved for focusing.