Help identifying a lock

[apexigsx]

Hello I am new to this forum and am hoping someone could help me identify a lock in my home. I would like to buy another lock like the one pictured below, but I can't find it anywhere. It works similar to a surface bolt, but its much stronger and thicker than a standard surface bolt.

http://home.comcast.net/~apexigsx/lock.jpg

[Theist17]

Are there any identifying marks on the lock? Stamped logos or anything like that? Otherwise, I don't think we'll be terribly useful here.

Thanks for stopping by.