“Hubstack”, patent-wise, is only the method of using an o-ring to hold the bearing/stack. Magicyoyo would be infringing by selling in the US until very recently, because they licensed the hubstack.
You answered your own question.
“Hubstack”, patent-wise, is only the method of using an o-ring to hold the bearing/stack. Magicyoyo would be infringing by selling in the US until very recently, because they licensed the hubstack.
You answered your own question.