Granted Patent
Utility
US 4,725,111 · App. 06/891,544
Holograms embossed into metal surfaces
Inventors:
Edward H. Weitzen, Salvatore F. D'Amato
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Jul 29, 1986
Inventors
Edward H. Weitzen
Salvatore F. D'Amato
Assignee (at issue)
AMERICAN BANK NOTE HOLOGRAPHICS, INC.
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.