If you are going to file a patent application you must have drawings to include in the application, but patent drawings are not the only type of “drawings” that an inventor should be considering.

The patent applicant is required to furnish at least one patent drawing (sometimes referred to as a patent illustration) of the invention whenever the invention is capable of illustration by way of a ...

10 x 12 in. (25.4 x 30.5 cm.) ...