Sometimes images are submitted as part of the product packaging. Unfortunately, you cannot limit your search to those records with electronic images. Here you'll find the type of trademark, such as block letters, design only, sound only, stylized letters, word and design, or word only. Such drawings are particularly important for electrical and mechanical patents, though less critical for chemical patents, where formulas can be expressed textually. An advantage of retrieving patent drawings electronically is the ability to manipulate and transfer them.
Some patent attorneys paste drawings into opinion letters rather than appending a photocopy.
Drawings can also be enlarged and printed for litigation work. Each patent may have multiple drawing sheets, and each drawing sheet may contain five or six figures. Each drawing sheet comprises an individual file, but you can extract individual figures from those files. All patent drawings are black and white line drawings. Not all providers furnish separate images and text.