AKA: EL-520D TWIN POWER SCIENTIFIC CALCULATOR, AKA (Label): EL-520D, Product number (P/N): EL520D (EL-520D),
Keywords/Tags: EL520D (EL-520D) | 520D | TWIN POWER SCIENTIFIC CALCULATOR
Origin: Thailand (List),
Power: Solar,
Display: Type = Display (LCD) (List),
Number of keys: 44,
Classification: / Pocket,
Featuring: Scientific functions, Square root,
Patents: 3902169(US); 3976994(US),
Collector value: 6.5/10,
Internet: Link-1: Robert LACOSTE