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;