US PATENT SUBCLASS 396 / 86
.~.~ Speed control or step driving

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

72  DF  HAVING VARIABLE FOCAL LENGTH OF CAMERA OBJECTIVE {7}
85  DF  .~ Power zoom {2}
86.~.~ Speed control or step driving

DEFINITION

Classification: 396/86

Speed control or step driving:

(under subclass 85) Subject matter wherein the velocity of the exposure objective is regulated or where the exposure objective is moved in discrete increments.