Klarinet Archive - Posting 000295.txt from 1997/04

From: Nick Shackleton <njs5%cam.ac.uk@-----.BITNET>
Subj:
Date: Thu, 17 Apr 1997 08:57:05 -0400

Thanks to Mark Charette's tip I found reference to a Christensen patent of
1960, I'll go & search for that. Nick