Museum Quality Reproduction of the US PATENT for the K&E Slide Rule!! Keuffel patented the Sliderule in 191.
Each sheet is reproduced on 8.5" by 11" Antiqued Parchment Paper , and includes the Drawing sheet and the Description Sheet shown. Own an amazing piece of HISTORY!! This is a low resolution scan of the actual documents for fast loading. The actual documents are of museum sharpness and quality.
The item "K&E Slide Rule US PATENT Art Print READY TO FRAME! 1915 Keuffel & Esser K E" is in sale since Thursday, December 11, 2014. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Engineering\Slide Rules".The seller is "the-patentguy" and is located in Milwaukee, Wisconsin. This item can be shipped worldwide.