C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
39/59
C21B 7/18 (2006.01) F27B 1/20 (2006.01) F27D 1/18 (2006.01) F27D 3/10 (2006.01)
Patent
CA 902909
Hayden Stanley P.
Woodworth William J.
LandOfFree
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