Vintage Double Hose

I was out scrounging today and found this. Doesn't have a name anywhere on it. Just says Patent Pending and with what looks like an "M" embossed on the inside. Any idea what it is I have found?

Hi davemann
The mask is an "Aquanaught" which is supplied with the complete"Surface Supply System" of the same trade name.

regulatorbj wrote:Hi davemann
The mask is an "Aquanaught" which is supplied with the complete"Surface Supply System" of the same trade name.

Excellent. Thank you. Your starting point led me to discover that this is an Evinrude Aquanaut (1966 - 1970) mask and as you said is part of a complete system that included a gas engine compressor. Looks like they might have been sold as Johnsons too. I only have the mask, but who knows someone might need an extra one someday and I'll be able to help.

Thanks again.

Dave