This link:
http://www.licensing.philips.com/cdsystems/cdlogos.html
Takes you to a portion of the Philips Electronics web site that handles
licensing of their various patents, trademarks and copyrights.
If you click on the little document icon on the right side, you can read the
standard package Philips uses to allow the use of the various Compact Disc
logos and copyrights.
I think this package is almost >exactly< the way I'd like to handle the D20
trademark license. In fact, I just gave a copy of it to the lawyers and
asked them to review.
If you have the time and the inclination, check out these materials and let
me know what you think of the approach.
Ryan