The registered sign.
More from Tech Symbols.
The quickest way is to copy ® from this page and paste it anywhere. You can also insert it with its Unicode, HTML, or alt code listed above.
® is U+00AE (decimal 174).
Use ® in HTML to render ® on a web page.
On Windows you can type it with Alt+174 (hold Alt and enter the number on the numeric keypad).
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