Granted Patent
Utility
US 5,864,432 · App. 08/849,586
Device for showing a first image in a second image which is visible through a transparent sheet
Inventor:
Christhard Deter
Patented Case
View Patent ↗
Granted: Jan 26, 1999
Filed: May 29, 1997
Inventor
Christhard Deter
Assignee (at issue)
LDT GmbH & Co. Laser-Display-Technologie KG
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.