B28B21/18 - CPC Classification Index

ClassID:

47579 ⎘

B28B21/18 - CPC Classification

Classification description:

Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements

Sub-classes:

B28B21/20 » using inflatable cores, e.g. having a frame inside the inflatable part of the core 3

Recent Application in this class:

20170036371

2017-02-09

System and process for molding of parts made of fiber cement

20160236374

2016-08-18

PACKERHEAD MACHINE

15395658

2019-11-19

Method of making ceramic composite bearings