PENTEFOLD

FIRE ALARM TELEGRAPH BOXES FOR INTERIOR AND EXTERIOR USE, SWITCHBOARDS AND RECORDING INSTRUMENTS AND CODE SENDING TRANSMITTERS FOR FIXED CODE FIRE ALARM SYSTEMS, ELECTRIC TELEGRAPH CONTROL SWITCHBOARDS USED FOR CONTROLLING VARYING-CODE FIRE ALARM TELEGRAPH SYSTEMS, AND MANUAL AND AUTOMATIC CODE TRANSMITTERS FOR FORMULATING AND TRANSMITTING VARIOUS CODES OVER TELEGRAPH SYSTEMS