B21D28/30 - CPC Classification Index

ClassID:

38658 ⎘

B21D28/30 - CPC Classification

Classification description:

Shaping by press-cutting; Perforating; Perforating, i.e. punching holes in annular parts, e.g. rims

Recent Application in this class:

20200147667

Tool-transition-free machining method and clamp for wheel outer rim

20170244359

Grounding spacer

20170244180

Grounding spacer

20140261640

Grounding spacer

20110091144

ROLLER BEARING CAGE, ROLLER BEARING, AND METHOD FOR PRODUCING ROLLER BEARING CAGE

20090019686

Method of manufacturing the outer retainer of a one way clutch that includes windows, by placing the outer retainer into a die and punching out slits in the outer retainer using a thin punch