Assertion: disc phonograph | /r/HasProperty | mass-marketed
Facets:
value: at the end of the 1890s
type: TEMPORAL
Source sentences:
text: The ability to record as well as play back sound was an advantage of cylinder phonographs over the competition from cheaper disc record phonographs which began to be mass-marketed at the end of the 1890s, as the disc system machines could be used only to play back prerecorded sound.