Title:
Leucauramine derivate of benzoyl leuco methylene blue and transfer sheet coated therewith
United States Patent 2915415

Inventors:
George, Francis Frederick
John, Neale David
Publication Date:
12/01/1959
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Assignee:
CARIBONUM LTD
Primary Class:
503/224
Other Classes:
428/914, 544/37
International Classes:
B41M5/136; C09B11/02; B41M5/132; C09B11/00