Included in this photo gallery are the drawings and text from original patents. These are copies of the originals submitted by the inventor to the United States Patent and Trademark Office.
Images 1-12 of 12
- Graphic Index
- Text Index
By Mary Bellis, About.com Guide
Books on Black History - Compare PricesBlack History Trivia QuizColors of Innovation - Black History
©2009 About.com, a part of The New York Times Company.
All rights reserved.