A patent print poster of a Portable Vision Test Chart Illuminator invented by Walter K. Long for Welch Allyn. The patent was issued by the United States Patent Office on April 12, 1949. Before Herman Snellen invented the the eye chart in 1862, doctors tested vision by asking patients to read complete sentences—each a different size—but it was too easy to guess the next word. In addition, patients who didn’t know how to read couldn’t have their vision assessed. The chart shown in the patent uses the Tumbling E, this chart is for kids and those who can’t read. It shows a capital letter E facing different directions. The patient looks at each character and points in the direction the E is facing.
Patent prints allow you to have a piece of history in your Home, Office, Man Cave, Geek Den or anywhere you wish to add an interesting touch.
COLORS AND SIZES
Prints are available in many colors and in all popular sizes. You can select your size and color while you order. Larger sizes and additional print are available. If you would like a larger size or would like a different print format or finish, please contact me directly for pricing.
WHAT MAKES OUR PATENT PRINTS DIFFERENT
You won’t find any Patent Art like these. I carefully select each patent for its historical and artistic value. Often, various sections of the patent document are assembled into one beautiful print. I also painstakingly remove most imperfections and flaws in the original document and do extensive digital restoration while maintaining the integrity of the original patent. This will make the print crisp and clear – almost like the day it was filed. I don’t use regular printers and paper to print this art. Instead, I use a high end lab and the prints are made on professional photo printers using high quality a archival inks and acid-free archival Lustre paper. Lustre is a premium finish on a heavier paper and offers the vibrant colors of glossy with the fingerprint-resistant finish of matte. This avoids glare on the print.
Prints are packaged to avoid any damage in transit. Usually prints will be flat-packed (not rolled) and shipped in a rigid box with material to protect the finished print. Some larger prints will be shipped in a rigid mailing tube with material to protect the finished print. Please see the shop’s policies page for additional information on shipping.