inventors Helbling and Pertsch patented aerosols pressurized using methyl and ethyl chloride as propellants.
Norwegian engineer Erik Rotheim (also spelled Eric Rotheim) patented the first aerosol can and valve that could hold and dispense products and propellant systems.
Lyle Goodhue and William Sullivan, developed a small aerosol can pressurized by a liquefied gas (a fluorocarbon)
the Norwegian post office issued a stamp celebrating the Norwegian invention of the spray can.