[mcadams]

Originally Posted by CW

A few of these were auctioned off in REA awhile back. They're copyright cards.
More info here:

http://www.psacard.com/articles/arti...id=6564&type=1

Great link, thanks. Looks like what JoeAdcock needs to find is the patent registration card, which should have the same # as the stamp on the back of his card. Cool stuff..