Granted Patent
Utility
US 5,759,521 · App. 08/557,528
Method of altering perception of relative space of an area
Inventor:
Alan R. Hirsch
Patented Case
View Patent ↗
Granted: Jun 2, 1998
Filed: Nov 14, 1995
Inventor
Alan R. Hirsch
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.