How do I bypass the lock screen?

So I bought a Motorola Droid at a garage sale, and I used up all the guesses for drawing the pattern on the lock screen. It says I can log into a Google account to unlock the phone, but I don't want to do that as it is not my Google account. Any help is greatly appreciated!

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 1
crwdns2934285:0crwdne2934285:0