Assertion: electric guitar's design | /r/HasProperty | based on research
Facets:
Source sentences:
text: As a qualified electronics technician, Fender had repaired radios, phonographs, home audio amplifiers, public address systems and musical instrument amplifiers, all designs based on research developed and released to the public domain by Western Electric in the 1930s using vacuum tubes for amplification.
text: As a qualified electronics technician, Fender had repaired radios, phonographs, home audio amplifiers, public address systems and musical instrument amplifiers, all designs based on research developed and released to the public domain by Western Electric in the 1930s using vacuum tubes for amplification.