Google is reported having changed "how they display the large map result for a single listing in search results pages."
"When you Google [General Patent Corporation International 10901], the new look page shows the web page above the OneBox. Then you'll also notice more changes to the OneBox itself. The changes include: the "more information" link changed to "place page".
Also there's a "ballon/marker" on the list and when you click on the result, it takes you to the Google Places Page for the result, instead of the listing's web page."