Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F16
ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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F16K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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11/00
Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
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F16K11/02
with all movable sealing faces moving as one unit
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F16K11/04
comprising only lift valves
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F16K11/052
with pivoted closure members, e.g. butterfly valves
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