Hello MARK!
On 27 Nov 97, MARK VANSICKLE wrote to Rich Lockyer:
 MV> Thanks.  I forget these things sometimes when firing off a question.  I
 MV> think the transition was '71 or '72 (but I don't have time to go peek at
 MV> the Duchussoir book right now
Ya... I was just too lazy to reach up and get it.  Lessee...  The patent was 
awarded Dec 29, 1970, and the tilt-neck and bullet truss rod appeared in the 
fall of '71.
 MV> Happy Thanksgoobers.
Yuuummmm... turkey....
C-ya! Rich
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