Classification Information
Acoustic alarms; Covers for computer keyboards; Electrical annunciators; Eyeglass chains; Eyeglass cords; Fire alarms; Pince-nez cords; Signal bells; Warning bells
Electrical and Scientific ApparatusAcoustic alarms; Covers for computer keyboards; Electrical annunciators; Eyeglass chains; Eyeglass cords; Fire alarms; Pince-nez cords; Signal bells; Warning bells
Electrical and Scientific Apparatus