| Hi Ed (tootsall),
Yes, that is the mouthpiece (Asymmetric) that I was referencing. It looks like a half-circle on top, with a flat bottom. So, it's not a double-cup (Parduba) or a symmetrical single-cup (like all the others). At one time they (Asymmetric) had a website. If they still do it should indicate if they are patented or not.
All the best.
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PAUL NELSON - Eclipse White Lightning / Getzen Eterna 900 Classic |