72323927
Apr 8, 1969
Mar 9, 1971
TELEPHONE ALARM AND MONITORING SYSTEMS-NAMELY, ELECTROMECHANICAL TELEPHONE ALARMS AND ELECTRONIC CONTROL UNITS FOR TRANSMITTING SUCH ALARMS, INCLUDING ELECTROMECHANICAL TELEPHONE DIALERS AND ELECTRONIC CONTROL UNITS FOR RECEIVING SIGNALS AND TRANSMITTING THEM TO THE DIALER
Housewares and Glass