Switzerland: "Swiss Inventions - Hook and Loop Fastener"

The original hook-and-loop fastener was conceived in 1941 by Swiss engineer George de Mestral, which he named velcro. The idea came to him one day after returning from a hunting trip with his dog in the Alps. He took a close look at the burs of burdock that kept sticking to his clothes and his dog's fur. He examined them under a microscope, and noted their hundreds of "hooks" that caught on anything with a loop, such as clothing, animal fur, or hair. To note this minisheet got a small piece of a real hook-and-loop fastener on it.

Source: https://en.wikipedia.org/wiki/Hook-and-loop_fastener

Stamp:

Swiss Inventions - Hook and Loop Fastener - Issued: 07-09-2023