OPPO Files Patent For Phone Case With Built-in QWERTY Keyboard
OPPO filed a design patent for its upcoming phone case with a built-in QWERTY keyboard. OPPO filed a patent for its upcoming phone case that has a built-in QWERTY keyboard on the side. This patent was listed in the World Intellectual Property Organization (WIPO). This patent was also filed by Guangdong Oppo Mobile Telecommunications at … Read more
