If you want to find out the name of the buyer's agent, the easiest thing to do is to call an agent who works in Bend and ask to look the information up in the MLS. If you are looking for the listing agent, you can Google the address of the property and you will find the internet advertisement of the property with the name of the listing agent.
By the way, Bend is a lovely town.
Simply Searcyh for homes in Bend, OR in Trulia, and choose the tab for "Recently Sold" listings. If you do not see it there,then look to the right for the featured realtor, and send an email to that Realtor asking them to look it up for you. Since they care enough to advertise themselves here, they will be happy to care about you finding what you want to know.