Hi Jim: Nope; never heard of the Schurr key?? Does it have a United States patent number? If so, it can be researched at the patent office web site. -73's- Corn- k4own -- FAQ on WWW: http://www.contesting.com/FAQ/tentec Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com