Patent Application 20210069765 - Method of Manufacturing Two Tubes Simultaneously and Machine for Use Therein > Summary

US Patent Application

Patent Application No. US 20210069765

Published on Mar 11, 2021

Application No. 16/953460

Field on Nov 20, 2020

Classification

International:

B21C 23/21

C21D 8/10;

B21K 1/06;

B21C 1/26;

B21C 23/03;

B21C 23/20;

B21C 23/10;

B21C 23/12;

B21K 1/26;

B21C 29/04;

B21C 23/00;

B21C 23/32;