Granted Patent
Utility
US 5,864,952 · App. 08/778,306
Knife for woodworking
Inventor:
Yen-Chao Chung
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: Jan 2, 1997
Inventor
Yen-Chao Chung
Assignee (at issue)
Lutz File & Tool Company
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.