74058744
May 14, 1990
Sep 22, 1992
building automation components; namely, proportional controllers, two-position controllers, two-stage controllers, proportional pneumatic controllers, proportional/integral controllers, reset controllers, minimum position controllers, staged relay controllers, high/low select controllers, power supply, programmable time clock, two-position controllers, sequencing controllers, digital indicators, current to pneumatic transducers, analog rescaling transducers, pulse to analog transducers, enthalpy transducers, dewpoint transducers, temperature sensors, temperature transmitters, relative humidity transmitters, differential pressure transducers, static differential pressure transducers, refrigeration and steam pressure transducers, and pneumatic pressure transducers
Electrical and Scientific Apparatus