When was the Metal Door Knob invented?
The Metal Door Knob was invented in 1878 by Osbourn Dorsey in the USA.
A round handle used to open and close a door.
| Year invented | 1878 |
|---|---|
| Inventor | Osbourn Dorsey |
| Country | USA |
| Category | Household |
Who invented the Metal Door Knob?
Osbourn Dorsey invented the Metal Door Knob in 1878 in the USA.
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