I have 2 of these with the same patent number; one is by "SuperKnife" the other by "Gerber". Superknife seems a bit presumptuous, but I've had one in my pocket for 10+ years. It's really a box cutter but small and light enough to clip on & carry in my pocket. Looks & functions like a locking blade folding knife. The only down side is I have to buy the 100 packs of blades since I'm not very discriminating what the blade touches. Can't beat it for $10.