Assertion: magic eye tube | /r/CapableOf | form the dumont television network
Facets:
value: ultimately
type: DEGREE
Source sentences:
text: The magic eye tube (or valve) for tuning radio receivers was invented in 1932 by Allen B. DuMont (who spent most of the 1930s improving the lifetime of cathode ray tubes, and ultimately formed the DuMont Television Network).