73015868
Mar 14, 1974
Jun 1, 1976
INDUSTRIAL INSTRUMENTS, CONTROLS AND RECORDERS-NAMELY, PRESSURE GAUGES, MECHANICAL FORCE GAUGES, PRESSURE SWITCHES, PRESSURE RECORDERS, THERMOMETERS, TEMPERATURE CONTROLLERS AND RECORDERS, ELECTRIC HEATER ELEMENTS, AND GAS CALORIMETERS
Electrical and Scientific ApparatusASSEMBLY, CALIBRATION, CLEANING AND REPAIR OF INDUSTRIAL INSTRUMENTS, CONTROLS AND RECORDERS
Building Construction and Repair