O2 + 2SO, ¾® 2SO3 or 2Mg + O2 ¾® what does r stands here for
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O2 + 2SO, ¾® 2SO3 or 2Mg + O2 ¾® what does r stands here for
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What does the circle R mean?
The circle R symbol (®) means that this mark is a federally registered with the U.S Patent and Trademark Office, either on the Principal Register or Supplemental Register.