Classification Information
"HARDJACKET" FOR MY INVENTION OF AN ANTICRUSH PROTECTIVE VEST TO PROTECT TRENCH WORKERS FROM BEING CRUSHED IN A CAVE-INTO THE POINT OF SUFFOCATION, SO ALSO A PERSONAL ANTICRUSH VEST, MOTORCYCLES, JETT SKIS, SPORTS ETC LIKE A HARDHAT, THIS IS A HARDJACKET
Electrical and Scientific Apparatus