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At 16, Osbourn Dorsey opened the door for all of us - The Black Wall Street Times

Retrieved on: 2023-09-15 20:34:36

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At 16, Osbourn Dorsey opened the door for all of us - The Black Wall Street Times. View article details on HISWAI: https://theblackwallsttimes.com/2023/09/15/at-16-osbourn-dorsey-opened-the-door-for-all-of-us/

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Osbourn Dorsey used cast iron instead of wood or metal ... In 1878, he patented the doorknob and doorstop. His invention was a major improvement over ...

Article found on: theblackwallsttimes.com

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