RT @ScienceCalendar: April 3, 1973-Engineer Martin Cooper made the first phone call using a hand-held portable cell phone.
Tweet 03/04/2013 06:36 AM
Posted by Bolton School on 03 Apr 2013
Modified by Bolton School on 16 Sep 2023
RT @ScienceCalendar: April 3, 1973-Engineer Martin Cooper made the first phone call using a hand-held portable cell phone.