B21D39/12 - CPC Classification Index

ClassID:

38721 ⎘

B21D39/12 - CPC Classification

Classification description:

Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating ; Tube expanders; Tube expanders with rollers for expanding and flanging

Recent Application in this class:

20250050406

2025-02-13

ELECTRIC PIPE EXPANDER

20230294156

2023-09-21

Electric pipe expander

20220176437

2022-06-09

Electric pipe expander, chuck structure for electric pipe expander, and control circuit for electric pipe expander

20130133390

2013-05-30

Method and apparatus for making a collar to the end of a pipe