44 SURGICAL APPARATUS-NAMELY, SURGICAL SUCTION AND PRESSURE PUMPS, ALONE AND IN SUCTION UNITS; DENTAL SUCTION AND PRESSURE PUMPS, ALONE AND IN SUCTION UNITS; ETHER UNITS, CABINET SUCTION AND ETHER UNITS AND PARTS THEREFOR; BREAST PUMP UNITS AND PARTS THEREOF; CENTRIFUGES; AND SURGICAL AND DENTAL CABINETS AND STANDS