Granted Patent
Utility
US 6,068,554 · App. 08/978,362
Hand manipulated dual controller assembly
Inventor:
Kelly D. Tyler
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Nov 25, 1997
Inventor
Kelly D. Tyler
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.