US PATENT SUBCLASS 377 / 99
.~ Beam type tube (e.g., magnetron, cathode-ray tube)

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

94  DF  COUNTING OR DIVIDING IN INCREMENTAL STEPS (I.E., STAIRCASE COUNTER) {5}
99.~ Beam type tube (e.g., magnetron, cathode-ray tube)

DEFINITION

Classification: 377/99

Beam type tube (e.g., magnetron, cathode-ray tube):

(under subclass 98) Subject matter where the device having more than two stable states is a tube which generates a beam of atomic particles.