GAUGE PLUG by TAYLOR VALVE TECNOLOGY INC (Track this)
Intl: (006) Metal goods US: 013 Filing date: 12-Dec-1969 Serial number: 72346128
STRUCTO-GAUGE by UNITED STATES GYPSUM COMPANY (Track this)
Intl: (019) Nonmetallic building materials US: 012 Filing date: 06-Feb-1964 Serial number: 72186208
VENTALARM GAUGE by SCULLY SIGNAL COMPANY (Track this)
Intl: (009) Electrical and scientific apparatus US: 026 Filing date: 18-Mar-1958 Serial number: 72047976
DURAGAUGE by ASHCROFT INC. (Track this)
Intl: (009) Electrical and scientific apparatus US: 026 Filing date: 02-Mar-1931 Serial number: 71311598