C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/275.5
C09B 11/26 (2006.01) B41M 5/145 (2006.01) C07D 491/20 (2006.01) C07D 491/22 (2006.01)
Patent
CA 1019742
Kast Hellmut
Schefczik Ernst
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