WORKING MODEL

Working Model is an engineering simulation software product.  Virtual mechanical components, such as springs, ropes, and motors are combine with objects in a 2D working space. After the "Run" button is clicked, the program will simulate the interaction of the model's parts and can also graph the movement and force on any element in the project. It is useful for basic physics simulations.
See more at Wikipedia.org...

In United States patent law, the reduction to practice is a concept meaning the embodiment of the concept of an invention. The date of this embodiment is critical to the determination of priority between inventors in an interference proceeding.Conception is the "formation in the mind of the inventor, of a definite and permanent idea of the complete and operative invention, as it is hereafter to be applied in practice." Hybritech Inc. v. Monoclonal Antibodies, Inc., 802 F.2d 1367, 1376 (Fed. Cir. 1986) (quoting 1 Robinson On Patents 532 (1890))
See more at Wikipedia.org...