The portable iBook clamshell laptop (1999) continued the design revolution Apple started with the iMac G3 just a year prior. Both were playful, colorful, and, in Jobs’ words, even "lickable." | Computer History Museum

NASA’s Original Laptop: The GRiD Compass

OPPO to launch a clamshell phone & rollable display phone in 2022: Tipster - Gizmochina

Apple’s foldable phone may feature clamshell design

Sharp clamshell foldable prototype device appears in a video - Gizmochina

Foldable iPhone to Feature a Clamshell Design, Cost Less Than Competing Devices, but May Arrive Much Later in the Market

Definition of clamshell device

Ulefone Armor Flip: The first clamshell phone of the company will arrive this month! (video) - Gizmochina