Keywords: Replica-of-first-transistor.jpg In 1997 Lucent Technologies created this replica to commemorate the 50th anniversary of the invention of the point-contact transistor at Bell Labs in December 1947 source http //clinton4 nara gov/media/jpg/replica-of-first-transistor jpg No photo credits; assumed to be public domain PD-USGov Bell Labs Point-contact transistors Early transistors |