Robuta

https://patents.google.com/patent/CA3003204C/en?inventor=gerd-albrecht%20graf&oq=gerd-albrecht%20graf CA3003204C - Single-use beverage barrel made of stainless steel - Google Patents The invention relates to a single-use beverage barrel for one-time use, produced from a primarily cylindrical casing part, deep-drawn bottom and lid parts,... single usemade ofstainless steelbeveragebarrel