Who invented the aerosol package system?
The modern aerosol package form was developed in stages dating back to 1929 when a Norwegian engineer designed a can and valve aerosol propellant system. In 1942 the U.S. Army developed aerosol spray cans of insect repellents for mosquito-bitten American World War II soldiers. Modern aerosol technology came into being in 1950 when an inventor named Robert H. Abplanalp developed a clog-free spray valve.