Which famous explorer co-patented the first underwater breathing equipment made available to the public?

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Jacques Cousteau, best remembered for his numerous television specials about the depths of the world's oceans, was also one of the inventors of the Aqua-lung, the first tank and regulator open-circuit breathing apparatus that achieved mass popularity and commercial success. This style of equipment is better known today as scuba gear.

Which Famous Explorer Co-Patented the First Underwater Breathing Equipment Made