Got this with some tools so I'm assuming it may be tool related. 4 inch in diameter and 2 inchs tall. Has a gasket on bottom edge that extends about 1/4 inchs from edge and is formed over the edge. I don't even have a guess. Only Marking"Burgone pat pend".

I might be a mile off, but don't cream seperators have a series of cones like that?

I have a set of SS cones from a separator, but no slots in them.  Definitely from the food industry, being stainless steel.   Burgone googles up a lot of wine, so it may be part of a processor for grapes?

I'm seeing some sort of drain guard.
Mel

BURGONE. For Deburrer for Plastic Pipe (Int. Cl. 6). First use Mar. 22, 1971

Is it sharp?

 Believe you hit it Rusty. Not too sharp,but sharp enough to remove burr from plastic pipe. Tried it on piece of 2 inch and it did the job. Probably works better on little larger pipe. Would have helped if they had called it Burrgone,or burr-gone. Wonder if they got the patent.

>Wonder if they got the patent.

Looks like it, inventor matches the registrant of the trademark too..

3754832, Filed Dec 1, 1970;Issued Aug 28,1973
(Interesting as first use is claimed 1971...tsk tsk)

http://www.google.com/patents/US3754832

I think Rigid makes one too. it deburrs both the inside and outside of the pipe cut.

Rothenberger, which I belive is a German firm, make a similar one with a plastic body and steel blades for de-burring inside and outside of copper water pipes - 8mm to 28mm diameter