'Shortly after establishing a lab in Menlo Park, N.J., he invented the carbon telephone transmitter'
Edison
INVENTORS: Shortly after establishing a lab in Menlo Park, N.J., he invented the carbon telephone transmitter
Shortly after establishing a lab in Menlo Park, N.J., he invented the carbon telephone transmitter
Shortly after establishing a lab in Menlo Park, N.J., he invented the carbon telephone transmitter
INVENTORS
Edison
INVENTORS