In the year 1873, earmuff was invented by Chester Greenwood when he was only fifteen years old. The earmuffs are used to cover a person’s external ears for safety and compromises metal or thermoplastic head band.
In the year 1873, earmuff was invented by Chester Greenwood when he was only fifteen years old. The earmuffs are used to cover a person’s external ears for safety and compromises metal or thermoplastic head band.
i just read about him in class!
it wwws so intersting!