Addo

1918 The Addo machine originated from Sweden, when Hugo Agrell, founded Addo AB in Malmö [1]
Subsequently made by Agrell Machine Co
1947 Bulmers (W. Percy Bulmer) was a listed exhibitor - British Industries Fair. Manufacturers of "Addo" Adding-Listing Machines. (Olympia, Ground Floor, Stand No. B.1420) [2]
See Also
Sources of Information
- ↑ [1] Vintage Calculators
- ↑ 1947 British Industries Fair p49