US PATENT SUBCLASS 396 / FOR 821
.~.~.~ Having electronic timing (354/173.11)

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

FOR 817  DF  MOTOR FILM DRIVE (E.G., SPRING, ETC.) (354/170) {1}
FOR 818  DF  .~ Automatic film advance (354/171) {2}
FOR 820  DF  .~.~ Having electric motor (354/173.1) {1}
FOR 821.~.~.~ Having electronic timing (354/173.11)

DEFINITION

Classification: 396/FOR.821

Having electronic timing: (354/173.11)

Subject matter under subclass FOR 820 in which the operation of the electric motor is limited and controlled by an electronic circuit having an electronic timing means.