1920 Ship Navigation Apparatus Patent invented by Elmer Sperry. The patent was issued by the United States Patent Office on November 30, 1920.
All patent print pages are restored and digitally enhanced to remove as many flaws as possible while maintaining the integrity of the original document.
Patent prints are a wonderful way to own a piece of history and display your favorite inventions on your home or office walls.
Select size and color from the drop down menus. Feel free to contact me for a different size or color background or texture. I will do my best to accommodate your request and create a custom order for you.
Note: Many computer monitors vary in color calibration therefore your print may have a slight difference from what your see on your screen.
1-3 business days
I'll do my best to meet these shipping estimates, but can't guarantee them. Actual delivery time will depend on the shipping method you choose.
Buyers are responsible for any customs and import taxes that may apply. I'm not responsible for delays due to customs.
Request a cancellation within: 3 hours of purchase
But please contact me if you have any problems with your order.