Granted Patent
Utility
US 6,744,421 · App. 10/367,153
Apparatus for convenient and comfortable cursor control device
Inventor:
David Lilenfeld
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Feb 19, 2003
Inventor
David Lilenfeld
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.