characterised by the use of particular materials

Full Title

Piston-rings, seats therefor; Ring sealings of similar construction in general > characterised by the use of particular materials

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL

Subclass:

PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS

Child Classifications

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• F16J 9/28 of non-metals