Suchergebnisse für: Maybaum, Levy
- Patent:FR269050 26.07.1897 Maybaum, Levy (P) : Système simple, facile et efficace pour additionner, soustraire, multiplier etc
- Patent:GB190310187 16.07.1903 Maybaum, Levy (P) : Improvements in Combined Type-writing and Adding Machines
- Patent:US605000 31.05.1898 Maybaum, Levy (P) : Calculating device
- Patent:US726959 05.05.1903 Maybaum, Levy (P) : Combined writing and adding machine