United States Patent RE22548

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Primary Class:
562/94
Other Classes:
562/93, 51/293
International Classes:
C07C303/02; C07C303/06; C07C309/28; C07C309/31; C07C309/37; C11D1/22; G01N13/00; C07C309/24; G01N33/36; C07C303/00; C07C309/00; C11D1/02