Can you find an example of a pre-PowerBook laptop that has a form factor with these traits? * Clamshell with hinge at the back of the case, not in the middle

Can you find an example of a pre-PowerBook laptop that has a form factor with these traits? * Clamshell with hinge at the back of the case, not in the middle. * Keyboard at the back of the case. * Blank area in front of the keyboard to rest your wrists. * Pointing device centered in this blank area, with mouse buttons below pointer. There were earlier laptops with some of those elements, but I'm pretty sure the PowerBook was the first to bring them all together.