Assertion: ketamine | /r/HasProperty | patented in belgium
Facets:
value: originally
type: MANNER
Source sentences:
text: Ketamine was originally patented in Belgium in 1963 and was approved for use in humans by the U.S. Food and Drug Administration in 1970.
text: Ketamine began as a veterinary anaesthetic when it was patented in Belgium in 1963.
text: Ketamine began as a veterinary anaesthetic when it was patented in Belgium in 1963.