...and ESAB bought them all, Victor, Tweco, Thermal Dynamics..... I've been using ESAB welders since 1990 when they bought out Linde and Airco. My hand plasma is ESAB but my table uses Hypertherm. I like the old stuff better than the new. Big old transformers and such. The solid state be welders they push today seem to be more fragile. My original ESAB from 1990 is still in service. My newest of the four is 12 years old.
It seems everything in the weld business is now controlled by either Miller, Lincoln or ESAB