Granted Patent
Utility
US 4,836,628 · App. 07/035,024
Holographic film material
Inventors:
James Doyle, Anthony J. Bond, Fiona E. Davidson
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Apr 6, 1987
Inventors
James Doyle
Anthony J. Bond
Fiona E. Davidson
Assignee (at issue)
Ciba-Geigy
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.