72024581
Feb 18, 1957
Jun 24, 1958
SILENCING DEVICES FOR COUPLING TO FLUID INLET AND/OR EXHAUST LINES IN CONJUNCTION WITH THE SILENCING OF SUCTION AND EXHAUST NOISES OF BLOWERS, COMPRESSORS, AND ENGINES, AS WELL AS THE SILENCING OF NOISES FROM BOILER INSTALLATIONS, ELECTRIC MOTORS, VALVES, AND THE LIKE
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