Assertion: silicon carbide's property | /r/CapableOf | unattaine in refractory bodies
Facets:
value: heretofore
type: TEMPORAL
Source sentences:
text: I have found that the resulting products, when the nitriding operation has been effectively carried out to bring about a thorough nitriding of the silicon constituent as hereinafter more fully described, have unexpectedly outstanding properties heretofore unattained in refractory bodies.