November 15, 1990: Cupertino wins a design patent for its Apple Extended Keyboard II, arguably the greatest computer keyboard of all time.
Delivering the perfect combination of durability, feel and a pleasing click-clack sound, the Extended Keyboard II will become a mainstay of pro-grade Apple setups during the early 1990s — and perhaps the best-loved keyboard in Apple history. Courtesy of an ADB-to-USB adapter, some people continue to use them today.
Apple Extended Keyboard II: Best Mac keyboard ever?
The original Extended Keyboard arrived in 1987, after the departure of Steve Jobs from Apple following his battle with CEO John Sculley.
Read more at CultofMac.com