Hoping you just want these "old timey" plants for your own private enjoyment, Ken. (and of course we will enjoy your pictures)
Do take seriously the fact that you are not allowed to propagate a patented plant to sell. Not sure if you're even allowed to propagate it to trade with your friends, as accepting something in trade could still be construed as "profit".
I don't know if there is anyone at Stewart who would be willing to hire a lawyer to defend a patent that is 30-odd years old - or if the patent is still valid since someone does seem to be selling the plants (maybe under license from the patent holder?) but if they did, you could be in trouble.
