Granted Patent
Utility
US 5,486,397 · App. 08/236,491
Protected reflection image
Inventors:
James N. Gordon, Ganghui Teng
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: Apr 29, 1994
Inventors
James N. Gordon
Ganghui Teng
Assignee (at issue)
Polaroid Corporation
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.