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

Clamcase Turns Your iPad Into A Laptop

Definition of clamshell

Heat Presses Clamshell Models

ColorSub Clamshell Heat Press Machine 15x15 inch Professional Factory Heat Transfer Sublimation Presses for T-Shirt Black

Motorola Gleam is a thin clamshell phone for Europe, reminds of times past

Nubia Flip clamshell smartphone debuts in China with 6.9" FHD 120Hz display, Snapdragon 7 Gen 1 & $415 price tag - Gizmochina

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