Inventor
HALDER MATHIS
CH13 patents
⚠️ This page may combine multiple inventors who share the name “HALDER MATHIS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
LANDIS & GYR AG
12 patentsUS4513274AApr 23, 1985
Current transformer for measuring instruments
LANDIS & GYR AG64 citations95
US4853620AAug 1, 1989
Circuit arrangement comprising multiplier circuits to find the sum of electrical power outputs for application in multi-phase electricity meters
LANDIS & GYR AG49 citations90
US4434400AFeb 28, 1984
Circuit for supervising an electronic electricity meter
LANDIS & GYR AG31 citations89
US4685138AAug 4, 1987
System for the display and scanning of the contents of a counter equipped with counting wheels
LANDIS & GYR AG24 citations80
US4749941AJun 7, 1988
Circuit arrangement for a meter for measuring two electrical quantities
LANDIS & GYR AG23 citations75
US4362990ADec 7, 1982
Current- and voltage-measurement transducer
LANDIS & GYR AG27 citations74
US4628251ADec 9, 1986
Precision measurement voltage transducer
LANDIS & GYR AG8 citations73
US4496932AJan 29, 1985
Current divider for current measurement in conjunction with a measurement transducer
LANDIS & GYR AG11 citations73
US4234872ANov 18, 1980
Circuit arrangement for a keyboard
LANDIS & GYR AG16 citations73
US4864223ASep 5, 1989
Measuring transformer to measure the current flowing in an electric conductor
LANDIS & GYR AG16 citations72
US4337438AJun 29, 1982
Pulse-width modulator circuit
LANDIS & GYR AG13 citations71
US4594547AJun 10, 1986
Mark-space amplitude modulator for measuring reactive power consumption or reactive energy consumption
LANDIS & GYR AG6 citations62