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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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7/00
Diaphragm; valves or; cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage; ; Pinch valves
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F16K7/04
constrictable by external radial force
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F16K7/06
by means of a screw-spindle, cam, or other mechanical means
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