Using Illustrator's Art Brushes, we're going to layer watercolor washes underneath black-and-white line art. This technique can be used with just about any kind of imagery however, including original artwork, clip art and silhouettes. Here, I've used a simple ink drawing on paper as a reference. Let's get started!
The Cooperative Patent Classification (CPC) is a patent classification system, which has been jointly developed by the European Patent Office (EPO) and the United States Patent and Trademark Office (USPTO).[1]
Classification. Patent publications from all of the Contracting States (and also most others) are each assigned at least one classification symbol indicating the subject to which the invention relates and may also be assigned further classification symbols and indexing codes to give further details of the contents.