US PATENT SUBCLASS 388 / 933
.~ Radiant energy responsive device

Current as of: June, 1999
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388 /   HD   ELECTRICITY: MOTOR CONTROL SYSTEMS

923  DF  SPECIFIC FEEDBACK CONDITION OR DEVICE {6}
933.~ Radiant energy responsive device

DEFINITION

Classification: 388/933

Radiant energy responsive device:

Art collection of systems wherein a feedback signal is generated by a device which is sensitive to radiant energy.