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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F16J
PISTONS; CYLINDERS; SEALINGS
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F16J15/16
between relatively-moving surfaces
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F16J15/32
with elastic sealings, e.g. O-rings
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F16J15/3284
characterised by their structure; Selection of materials
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