Assertion: plastic pencil | /r/HasProperty | commercialised by empire
Facets:
value: as the "epcon" pencil
type: OTHER
Source sentences:
text: Invented by Harold Grossman for Empire Pencil Company in 1967 and subsequently improved upon by Arthur D. Little for Empire from 1969 through the early 1970s; the plastic pencil was commercialised by Empire as the "EPCON" Pencil.