Patent Drawings
for the Fred Frick Electric Program Clock

Fred Frick was awarded two patents for his clock. Patent No. 535,948 on March 19, 1895 and Patent No. 551,375 on December 17, 1895. Clicking on the pictures below will take you to a larger view. Use the "back" button on your browser to return here. Before 1870, anyone applying for a patent had to submit a model of their invention. Since 1870 drawings, the written application, a declaration stating that you are the inventor, and detailed descriptive information are the items usually required. There are fees that must be paid to file for a patent. See the section on the types of acceptable drawings for patents and "What is a Patent" for more information.

Patent No. 535,948 Fig. 1		Patent No. 535,948 Fig. 2
Patent No. 535,948 Fig. 5,8,9,10		Patent No. 535,948 Fig. 3,4,6,7
Patent No. 551,375 Fig. 1

(Note: The objects pictured above are part of The Franklin Institute's protected collection of objects. The images are © The Franklin Institute. All rights are reserved.)

There are two acceptable types of drawings that can be sent with a utility patent application.

1. Black ink. These are normally the required type. India ink or a type that will produce solid black lines must be used.

2. Color drawings are accepted only when necessary and after filing an explanation telling why the color is important to the patent process.

Photographs may also be submitted, but normally are not permitted in utility patent applications. Find out more about the rules that apply at the U.S. Patent and Trademark Office Home Page.

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