The Proto-Board. Advertisement from a 1978 Magazine

I was just gathering more information about my DIY lab bench linear dual power supply, and I found this funny advertisement of... The Protoboard!


I'd never thought it was once a time a registered product. Definitely it was a major invention at late 70's. It's still used in my faculty, not as bulky since it requires external power, but local stores still supply for a humongous price of 40€, too much given you can buy a simpler one and modify it for half the price...