Deletion of HP 7470

Comment: I had one of these.  It was a pretty neat piece of gear.  Hmm, no, maybe it was a 7475 that we had.  Yeah, I think it must have been a 7475.  Either way, neat technology, although by then HP was starting down the slow slide into the commodity hardware business.  HP-GL was a nice little language, too.  I seem to remember you could get liquid ink pens in addition to the standard felt-tip markers, for publication-quality plots.  Sadly, though, most of the article is  and my own searching failed to find anything I would call a 
Stance: delete
Cited policy: Wikipedia:No original research (WP:OR||WP:RS)