I took a look on Bing (which usually has a different set of data than Google), and archive.org didn't have an snapshot of Euro Pro or sharkclean.com. That's unfortunate.
Email them or write them a letter to a US office. For a company so dependent on infomercials they should have an archive. Maybe someone in their marketing department could get in touch with you.
There are also a few people on youtube that taped a ton of network television on beta or VHS. Like videoholicreturns has some great vintage tech stuff if you're interested in that. He wouldn't have a vacuum infomercial but there definitely was a huge taping culture for awhile. Someone in the world has to have a copy of that infomercial. I hope you find it one day!