Sort of interesting that not only is the design patented, but also the tying procedures. The last paragraph reads :
Having described and illustrated the principles of the invention in a preferred embodiment thereof, it should be apparent that the invention can be modified in arrangement and detail without departing from such principles. The disclosed design and method can be used to make many patterns of flies, wet as well as dry, with and without wings or tail, and using virtually all of the materials conventionally used in fly tying. In addition, the precise sequence used to attach the fly material to the hook can also be changed. I claim all modifications and variation coming within the spirit and scope of the following claims. That least line in particular, hmmm. So I guess that anybody else who decided to sell some upside down and backwards pattern would be in trouble legally speaking? Dave Wilson http://www.wilsonsworld.org As you know the Waterwisp is a patented design (US patent 5,353,545). When one applies for a patent one has to submit quite extensive documentation and images, more detailed than most tying books or articles... Take a peek at this: http://www.uspto.gov/patft/index.html
