US PATENT SUBCLASS 377 / 38
.~ Plug in counter

Current as of: June, 1999
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377 /   HD   ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS

27  DF  SYSTEMS {21}
38.~ Plug in counter

DEFINITION

Classification: 377/38

Plug in counter:

(under subclass 27) Subject matter where the counter is designed to be temporarily attached to a machine or apparatus.

SEE OR SEARCH THIS CLASS, SUBCLASS:

15, for counting the number of times a machine or apparatus operates.

16, for using counters to monitor some specific parameter relative to a machine, apparatus, or operation, e.g., the time a machine or apparatus operates.