METODO Y APARATO DE PRODUCCIËN DE BOLSAS PLASTICAS DE FUELLE

摘要

1,049,195. Gussetted plastics bags. CANADIAN INDUSTRIES Ltd. Oct. 1, 1964 [Oct. 7, 19631, No. 39406/63. Heading B8K. [Also in Division B5] A bag is made of gussetted plastics tubular film closed at each end by a transverse heat seal.