Chelatable spiro [benzopyran-2, 2'-indoline] derivatives
United States Patent 3299079

Inventors:
Taylor, Lloyd D.
Publication Date:
01/17/1967
View Patent Images:
Download PDF 3299079 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
POLAROID CORP
Primary Class:
546/15
Other Classes:
548/149, 534/590, 548/409, 546/18, 564/273, 568/424, 548/147, 548/223, 534/752, 252/600, 548/216
International Classes:
G03C1/685
Other References:
None