US PATENT SUBCLASS 396 / 251
.~.~ Having RC circuit for timing

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

213  DF  EXPOSURE CONTROL CIRCUIT {23}
246  DF  .~ Shutter speed function only {6}
251.~.~ Having RC circuit for timing {4}
252  DF  .~.~.~> Including memory capacitor
253  DF  .~.~.~> Including plural selective capacitors
254  DF  .~.~.~> Including plural selective resistors
255  DF  .~.~.~> Having indicator

DEFINITION

Classification: 396/251

Having RC circuit for timing:

(under subclass 246) Subject matter in which the exposure control circuit contains at least one RC (resistor and capacitor) circuit, the time constant of which is used for exposure time control.