Granted Patent
Utility
US 4,748,097 · App. 06/877,954
Method of preparing a hologram
Inventors:
John A. Clark, Alan Adshead, David W. Butcher
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: Jun 24, 1986
Inventors
John A. Clark
Alan Adshead
David W. Butcher
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.