Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
PairofMedics:Hello gentlemen, I've read your information/postings and this is a hot topic. It seems your idea was not fool hearted. The products you mentioned are now a reality in australia and the UK. Sorry someone beat you to inventing it, but thanks to minds like yours, scuba diving is available to even more people now. One more tool to make diving and snorkel adventures safer.
www.meddive.delvtech.com/asthma-freedom-snorkel.htm