B28B21/20 - CPC Classification Index

ClassID:

47580 ⎘

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

Sub-classes:

B28B21/205 » {having a rigid frame inside the inflatable part of the core} 0

Recent Application in this class:

20170036371

2017-02-09

System and process for molding of parts made of fiber cement

20160263773

2016-09-15

System and process for molding of parts made of fiber cement

20100019412

2010-01-28

Method of manufacturing a thermal insulation article

15395658

2019-11-19

Method of making ceramic composite bearings