Assertion: transistor | /r/HasProperty | invented by j. barden
Facets:
Source sentences:
text: Transistors are smaller than vacuum tubes, and were invented by J. Barden and W.H. Brattain of Bell Laboratories, USA.
text: Transistors are smaller than vacuum tubes, and were invented by J. Barden and W.H. Brattain of Bell Laboratories, USA.