US PATENT SUBCLASS 60 / 399
.~ Unsafeness, unreadiness or disarray prevent manual change or operative state


Current as of: June, 1999
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60 /   HD   POWER PLANTS

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
399.~ Unsafeness, unreadiness or disarray prevent manual change or operative state


DEFINITION

Classification: 60/399

(under subclass 325) Apparatus in which a precedent condition must be sensed or indicated as satisfied to permit the operator to change the operative state of the system.

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368, for a system controlled by a programmer to provide a series of operations in a desired order.