Curta Calculators - Handheld Calculators (1 янв 1945 г. – 31 дек 1945 г.)
Описание:
The Curta calculator was invented by Thomas de Colamar. He started this idea in 1938, but finally came out with his invention in 1945. This is a portable calculator- easy to carry around; it resembles the shape of a pepper grinder.Добавлено на ленту времени:
Дата:
1 янв 1945 г.
31 дек 1945 г.
~ 12 months