After Dr Werner Freyberg having developed a method of disinfesting stock using metal phosphides that proved to be successful in applications such as grain silos it received its first patent.
1934
erstellt am: 20.12.2018
erstellt am: 20.12.2018
After Dr Werner Freyberg having developed a method of disinfesting stock using metal phosphides that proved to be successful in applications such as grain silos it received its first patent.