Who Invented the Doorknob?

Answer

African American inventor Osbourn Dorsey invented the first doorknob in 1878. While others had made similar inventions, Dorsey was the first to patent the idea.
Q&A Related to "Who Invented the Doorknob?"
it was invented in a home when a man could not open his door, so he took a piece of would carved it into a round shape, and nailed it in his door.
http://wiki.answers.com/Q/Where_was_the_doorknob_i...
A man named Osbourn Dorsey has the first recorded patent for improvements on a
http://www.chacha.com/question/when-were-doorknobs...
The doorknob was invented by Osbourn Dorsey in 1878. Thanks to him, we can get in and out of places!
http://www.kgbanswers.com/who-invented-doorknobs/4...
The first person to invent doorknob was Osbourn Dorsey, who invented it in 1878. Dorsey had got a patent for improving the device for closing doors. There is not much information
http://www.answerbag.co.uk/q_view/1905504
1 Additional Answer
The first documented invention of the doorknob appears in U.S. Patent entries for the year 1878 by an African American inventor named Osbourn Dorsey.
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