Granted Patent
Utility
US 5,319,906 · App. 07/879,774
Stage platform assembly and method of making same
Inventor:
Michael Hayden
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: May 6, 1992
Inventor
Michael Hayden
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.