Disazo pyrazolyl dyed polyester fibers pdf download

08-16-2023 comment

Disazo pyrazolyl dyed polyester fibers pdf download.This application is a continuation-in-part of application Ser.No.191,535,filed Oct.21,1971,now abandoned;application Ser.No.191,535 is in turn a continuation-in-part of application Ser.No.816,394,filed Apr.15,1969;abandoned.

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