A look at events that made history this week - compiled by the Summerland Amateur Radio Club of Lismore, NSW Sunday 24 December 2006
1869 W.F.Semple, USA, patents Chewing Gum. 1947 Transistor invented at Bell Telephone Labs. USA. 1952 First transistor hearing aid marketed in the USA.
• Visit the Summerland Amateur Radio Club's website
• Read last week's 'History This Week'
