Assertion: spectrophotometer | /r/HasProperty | invented by arnold o. beckman
Facets:
value: in 1940[disputed – discuss
type: TEMPORAL
Source sentences:
text: Invented by Arnold O. Beckman in 1940[disputed – discuss], the spectrophotometer was created with the aid of his colleagues at his company National Technical Laboratories founded in 1935 which would become Beckman Instrument Company and ultimately Beckman Coulter.