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Very possible. There are very few companies actually making bits. Other companies will buy bits and put their names on it. other companies may be buying the same bits and marketing them. Only companies who have patented a certain design will have exclusive access to certain bits. Just remember, patents have a certain life and they do expire. Then anyone can copy them.
Without a close inspection, I would not be able to tell if they are the same, in this instance.
Without a close inspection, I would not be able to tell if they are the same, in this instance.