Assertion: ciprofloxacin | /r/HasProperty | patented
Facets:
value: in 1983
type: TEMPORAL
value: by bayer a.g.
type: OTHER
Source sentences:
text: Ciprofloxacin was first patented in 1983 by Bayer A.G. and then accepted by the United States Food and Drug Administration (FDA) in the year 1987.