The Modern Doorknob Was Invented in 1878? #doorknob #history
4 days ago
11
The modern doorknob was invented in 1878 — and helped define the concept of privacy in homes. This is how a simple turn changed domestic life. Follow for more.
#history #doorknob #design #invention #1878 #privacy #home
Oscar Uhlman and the Doorknob Patent, U.S. Patent Office, 1878
https://patents.google.com/patent/US208114
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