On 19 Jan 2006, at 18:59, Aaron Trevena wrote: > Sounds really useful, > > but of course you have to be careful not to infringe patent GB2403306, > (http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=GB2403306&F=0) among > others. Prior art. Plus, it's bleeding obvious. And never sue anyone with no money.