US PATENT SUBCLASS 396 / 83
.~.~ Having mechanical interlock

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

72  DF  HAVING VARIABLE FOCAL LENGTH OF CAMERA OBJECTIVE {7}
79  DF  .~ Having focus operation {2}
83.~.~ Having mechanical interlock

DEFINITION

Classification: 396/83

Having mechanical interlock:

(under subclass 79) Subject matter having a mechanical connection between compensator and variator elements of the exposure objective in order to maintain focus as the focal length is varied.