I think there used to be a list of makers marks around on the Blade forum or a link to it. I use my name as do a lot of others, just because a symbol or the like isn't much of a clue and there are a lot of knife makers.
If its an etched on Logo the stencil may have been made by
Knifemaker Logo
He makes great stencils and is use by a lott of makers, I use his stencils. He has a couple of pages of makers stencils under Knife maker fingerprint. But, its far from all of them. But, you could email him. He is a great guy and has a great memory. I got a new batch of stencils a while back and when I emailed him he immediately knew who I was and had a copy of mine on file.