When was the blow torch invented?

The blowtorch was invented in the late 19th century, with various designs emerging around that time. The earliest patent for a blowtorch is attributed to the French engineer André Citroën in 1903, although simpler versions existed before that. The device gained popularity for use in metalworking and soldering tasks. Over the years, blowtorches have evolved in design and functionality, becoming essential tools in various industries.