Cash register for amount is a guidance, more items sums formation and sum mitmehreren but adding pull works, adding a collecting unit and a main adder factory

• 1. Control device for amount of cash registers a which comes next, more items sums formation and sum pulling [P] . 德国专利： DE581639C . 1934-03-08

  机译： 接下来的收银机数量控制装置，更多的项目总和形成和总和提取

• 2. Cash register for amount is a guidance and sums decrease in the factory with a cards hole [P] . 德国专利： DE669603C . 1939-01-05

  机译： 现金收银机是一种指导，在工厂内有卡片孔的总金额减少

• 3. Cash register with adder works for total sum and partial sum [P] . 德国专利： DE887423C . 1953-08-24

  机译： 带加法器的收银机可用于总和和部分和

• 1. Editor's Gloss: Adding to the Sum of Accurate Information in the World [O] . Judith Axler Turner 2002