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From: David Singmaster <zingmast@sbu.ac.uk>
To: cube-lovers@ai.mit.edu
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Subject: RE: Rubik lawyers up in arms over website -- Digest v23 #279]

	Norman Diamond refers to the patents expiring.  However, Rubik
only had a Hungarian patent.  As a result, the various Rubik companies
took legal action under copyright law, and copyright lasts much
longer.
	Perhaps I should hassle Seven Towns about the use of my notation!

DAVID SINGMASTER,  Professor of Mathematics and Metagrobologist
School of Computing, Information Systems and Mathematics
Southbank University, London, SE1 0AA, UK.
Tel: 0171-815 7411;  fax: 0171-815 7499; 
email:  zingmast  or  David.Singmaster  @sbu.ac.uk