3 янв 1924 г. - Development of new revolutionary navigation system
Описание:
The first radio acoustic ranging navigation operation on the west coast is conducted by the coast and geodetic survey. This event is significant because it is the first navigation system that is capable of operation in all weather conditions.Добавлено на ленту времени:
Дата:
3 янв 1924 г.
Сейчас
~ 100 г назад
