Assertion: self defense weapon | /r/HasProperty | developed by sōke takayuki kubota
Facets:
value: in the late 1960s
type: TEMPORAL
Source sentences:
text: Kubotan (sometimes erroneously spelled as kubaton or kobutan) is a genericized trademark for a self-defense keychain weapon developed by Sōke Takayuki Kubota in the late 1960s.