I came across this vise (a palmgren), and I'm trying to figure out how
it attaches to the drill press table. Most press vises I have seen have
lugs of some sort to bolt to the table, but I can't see any on this one.

http://ecx.images-amazon.com/images/I/41R9WRX8XCL.jpg

I'm sure someone here has come across a vise like this, how is it
attached to the table?

Jon