CPC Subgroup
F16F 1/376 having projections, studs, serrations or the like on at least one surface ( , F16F1/387 take precedence)
Full Title
Springs (working with fluid F16F5/00, F16F9/00) > made of rubber or other material having high internal friction, > characterised by having a particular shape > having projections, studs, serrations or the like on at least one surface ( , F16F1/387 take precedence)