Exposition Invention/Design. Regards croisés.
Recently at the Musée des Arts et Métiers there was an exhibition called "Exposition Invention/Design. Regards croisés.", set up with Sismo. Among several interesting design inventions (bicycles, heater, plane propellers, etc.), there were a handful of keyboards and typewriters. I took a few photographs (phone quality, sorry), here they are:
the Underwood "Raphael" and the AEG Mignon no 4":
Several mockups and first models of the IBM PC Convertible by Richard Sapper. Notice the difference between keyboards (blank keycaps, design of the Enter key, etc.):