'In 1878 Edison gave up working on his "favorite invention" to develop a practical one of these'
Light bulb
EDISON & THE PHONOGRAPH: In 1878 Edison gave up working on his favorite invention to develop a practical one of these
In 1878 Edison gave up working on his "favorite invention" to develop a practical one of these
In 1878 Edison gave up working on his "favorite invention" to develop a practical one of these
EDISON & THE PHONOGRAPH
Light bulb
EDISON & THE PHONOGRAPH