Author: Don Berger
Date: 2010-01-19 01:55
I have a copy somewhere of Marchi's ?only? US patent #3,844,193. cited in Galpers Vent pat and another. Search Google pPatents for them, the drawings in 193 may be of some help, and there seems to be a sort of fingering chart as well. I'll look farther via USPTO and will report any add'l findings. Interesting, didn't know of cls made. Don
Thanx, Mark, Don
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