Assertion: concertina | /r/CapableOf | use uhlig's 20-button system
Facets:
Source sentences:
text: Initially the term Anglo-German only applied to concertinas of this type built in England, but as German manufacturers adopted some of these techniques, the term came to apply to all concertinas that used Uhlig's 20-button system.
text: The term came to apply to all concertinas that used Uhlig's 20-button system.