Granted Patent
Utility
US 6,446,057 · App. 09/730,481
Method and apparatus for transparent backtracking
Inventor:
Paul W. Vaughan
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Dec 4, 2000
Inventor
Paul W. Vaughan
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.