U.S. federal trademark · Serial No. 75255490 · Reg. No. 2229951
testing equipment used for the mineral industry, namely, flash point testers, penetrometers, breaking point automatics, and ductility machines; herschel apparatus used in the demulsification of the stability of lubricating oil
distillation equipment for determining the content of diverse substances, such as sulphur or water in mineral and oil products
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