Turns out there's a US 2008/0250656 A1 patent for a composite knife blade - a knife blade made of two pieces - one containing the area near cutting edge and the other containing the rest of the blade ...
Possible Duplicate: is there an infringement between this patent and lufthansa us8216392 patent? us8216392 patent produced "cyclean" you can google for images and us7445677 drawings are ...
I came up with an idea similar to this one (us20070091093) around the same time and I've read this patent pretty thoroughly. They cover a large part of what my idea is, but I have differences in ...