US PATENT SUBCLASS 396 / 220
.~.~ Plural blades

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

213  DF  EXPOSURE CONTROL CIRCUIT {23}
217  DF  .~ Direct drive galvanometer control device {3}
220.~.~ Plural blades

DEFINITION

Classification: 396/220

Plural blades:

(under subclass 217) Subject matter wherein the shutter or the diaphragm comprises more than one blade.

SEE OR SEARCH THIS CLASS, SUBCLASS:

497, for shutter with plural oscillating blades.

510, for diaphragm with plural pivoted blades.