SENTRON by Control Instruments Corporation (Track this)
Intl: (009) Electrical and scientific apparatus US: 026 Filing date: 16-Jul-1984 Serial number: 73489985
SENTRONIC by SCHLAGE LOCK COMPANY LLC (Track this)
Intl: (009) Electrical and scientific apparatus US: 021 Filing date: 31-Mar-1972 Serial number: 72420094
SENTRONIC by T. H. CREEARS CORPORATION (Track this)
Intl: (009) Electrical and scientific apparatus US: 021 Filing date: 18-Jan-1971 Serial number: 72381215