The three symbols that are most commonly associated with trademarks: Circle R (®), TM, and SM. Depending on the goods/services sold and the status of the TM application with the USPTO, one or more of these marks may be appropriate.
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Which trademark symbol can you use: ®, TM or SM?
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Trademark Symbols TM, SM, ® and how to type them
hnxxx (@hnxxx13) / X
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™℠®© Trademark TM Symbol
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Trademark Symbols - International Trademark Association