On June 2,1942, Hanford was awarded a patent for his process, which would become the standard method for modern polyurethane production.
This procedure would become the standard method for modern polyurethane production. On June 2,1942, Hanford was awarded a patent for his process.
On June 2,1942, Hanford was awarded a patent for his process. This procedure would become the standard method for modern polyurethane production.
On June 2,1942, Hanford was awarded a patent for his process. This procedure would become the standard method for modern polyurethane production.