Granted Patent
Utility
US 4,374,769 · App. 06/274,599
Water-soluble tris phenyl bisazo dyes for polyamide fibers
Inventors:
Ralph R. Giles, Max A. Weaver
Patented Case
View Patent ↗
Granted: Feb 22, 1983
Filed: Jun 17, 1981
Inventors
Ralph R. Giles
Max A. Weaver
Assignee (at issue)
EASTMAN KODAK COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.