THE MARK HAS BEEN USED ACTIVELY AND EXCLUSIVELY BY APPLICANT ON THE ITEMS HEREIN SET FORTH SINCE THE DATES HEREIN GIVEN; CONSTANT PRESSURE PUMP GOVERNORS, 1890; EXCESS OR DIFFERENTIAL PUMP GOVERNORS AND PRESSURE RELIEF VALVES AND BACK PRESSURE VALVES, 1900; PRESSURE REDUCING VALVES, FLOAT VALVES, LEVER VALVES, ATMOSPHERIC RELIEF VALVES, PRESSURE REGULATORS, STEAM TRAPS, GASOLINE AND OIL TRAPS, STEAM AND OIL SEPARATORS, PIPE LINE STRAINERS, LIQUID LEVEL CONTROLLERS, AND EXHAUST HEADS, 1910; CONTINUOUS DRAINERS, 1915; VACUUM REGULATORS, FLOAT UNITS, 1920; BOILER GAS FUEL GOVERNORS, PRESSURE PILOT VALVES, GAS REGULATORS, 1925; LIQUIFIED PETROLEUM GAS REGULATORS FOR CONTROL OF SUPPLY FROM DRUMS AND TANKS TO SERVICE POINTS, 1927; ALTITUDE VALVES PRESSURE-BALANCED REGULATORS; TEST GAUGES, AIR LINE FILTERS, AIR AND GAS FILTERS, 1930; TIME AND TEMPERATURE GAS PRESSURE BOOSTER REGULATORS, 1932, AND SAFETY SHUT-OFF REGULATORS, DIFFERENTIAL GAS PRESSURE BOOSTER REGULATORS, 1935.