Assertion: plastic pencil | /r/HasProperty | invented by harold grossman
Facets:
value: for empire pencil company
type: PURPOSE
value: in 1967
type: TEMPORAL
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.