Unless you've been on a desert isle for nearly four decades, innovative designs from industry icon Hartmut Esslinger and his team at Sunnyvale, Calif.-based frog design have likely caught your eye.

Heatworks, maker of the Model 3 tankless water heater, is partnering with Frog Design to introduce the Tetra, a connected countertop dishwasher. Powered by Heatworks' Ohmic Array technology, Tetra ...

Frog, however, tackled it well. In the Mobile Market scenario, Frog Design attempted to solve the issue of local food distribution from farms to urban centers.

Now Frog Design, the firm that created those mock-ups, has unearthed some photos from its archives that show what the tablet might have looked like more than 25 years ago.