IC 007. US 013 019 021 023 031 034 035. G & S: VALVES, NAMELY, PRESSURE CONTROL VALVES FOR VACUUM DEVICES; EXHAUST VALVES FOR VACUUM DEVICES; GATE VALVES FOR SEMICONDUCTOR MANUFACTURING DEVICES AND GATE VALVES FOR LIQUID CRYSTAL MANUFACTURING DEVICES; DOOR VALVES FOR SEMICONDUCTOR MANUFACTURING DEVICES; DOOR VALVES FOR LIQUID CRYSTAL MANUFACTURING DEVICES; VACUUM VALVES FOR ACCELLERATORS
IC 009. US 021 023 026 036 038. G & S: AUTOMATICALLY OPERATED METAL VALVES
(CANCELLED) IC 020. US 002 013 022 025 032 050. G & S: [ VALVES OF PLASTIC BEING OTHER THAN MACHINE PARTS ]
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