US PATENT SUBCLASS 377 / 127
.~ Using bistable semiconductors having at least three electrodes or analogous complementary transistor circuits (e.g., avalanche transistor, SCR's)

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377 /   HD   ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS

118  DF  PULSE COUNTING OR DIVIDING CHAINS {4}
127.~ Using bistable semiconductors having at least three electrodes or analogous complementary transistor circuits (e.g., avalanche transistor, SCR's)

DEFINITION

Classification: 377/127

Using bistable semiconductors having at least three electrodes or analogous complementary transistor circuits (e.g., avalanche transistor SCR's):

(under subclass 118) Subject matter where each stage utilizes semiconductors which have two stable states and at least three electrodes or where each stage utilizes complementary transistors connected so as to function in the same way as a single semiconductor having two or more stable states.

SEE OR SEARCH THIS CLASS, SUBCLASS:

120, for chains using bistable regenerative trigger circuits comprising semiconductors having at least three electrodes.