US PATENT SUBCLASS 396 / 136
.~.~.~ Duty cycle

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

89  DF  WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS {28}
133  DF  .~ Lens drive circuit or motor structure {2}
135  DF  .~.~ Speed control {1}
136.~.~.~ Duty cycle

DEFINITION

Classification: 396/136

Duty cycle:

(under subclass 135) Subject matter wherein the speed of the motor is controlled by varying the percentage of time that power is applied to the motor during a periodic power cycle.