U.S. federal trademark · Serial No. 88332103
underwater speaking device in the nature of speaking tubes for scuba diving in the nature of an extendable air-fillable chamber with a soft mouthpiece sealable over the mouth, below a diving mask and below the nose, and over the bottom of the chin, for the purpose of providing an air filled chamber into which a diver can speak, for orally communicating while scuba diving
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.