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https://www.prnewswire.com/news-releases/inventhelp-inventors-develop-improved-propane-soldering-torch-and-cylinder-lax-1261-301250863.html
InventHelp Inventors Develop Improved Propane Soldering Torch and Cylinder (LAX-1261)
/PRNewswire/ -- "We wanted to create an easier way for welders to use a propane cylinder and absorb all the gas in the torch," said one of three inventors,...
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