US Patent Class 377-- ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS-- MAIN HEADINGS

US Patent Class 377
ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS-- Main Headings

		CLASS NOTES
1	DF	APPLICATIONS {11}
27	DF	SYSTEMS {21}
57	DF	CHARGE TRANSFER DEVICE (E.G., ANALOGUE SHIFT REGISTER, CCD, BUCKET BRIGADE DEVICE) {5}
64	DF	SHIFT REGISTER {8}
82	DF	ELECTROMECHANICAL COUNTER {10}
93	DF	WITH SUPERCONDUCTIVE ELEMENT
94	DF	COUNTING OR DIVIDING IN INCREMENTAL STEPS (I.E., STAIRCASE COUNTER) {5}
101	DF	USING BISTABLE MAGNETIC CORES OR FERROELECTRIC CAPACITORS
102	DF	USING BISTABLE ELECTRO-OPTICAL DEVICES
103	DF	COUNTING OR DIVIDING CHAINS USING GAS-FILLED TUBES
104	DF	PHASED CLOCKING {1}
106	DF	PARTICULAR PARALLEL GATING OR CLOCK SIGNAL
107	DF	STARTING, STOPPING, PRESETTING OR RESETTING THE COUNTER {1}
111	DF	PARTICULAR INPUT CIRCUITS FOR COUNTER
112	DF	INDICATING MEANS {1}
114	DF	PARTICULAR OUTPUT CIRCUITS FOR COUNTER
115	DF	PARTICULAR TRANSFER MEANS (E.G., MASTER-SLAVE) {1}
118	DF	PULSE COUNTING OR DIVIDING CHAINS {4}
129	DF	PULSES CONTINUOUSLY CIRCULATED IN A CLOSED LOOP
130	DF	MISCELLANEOUS