Granted Patent
Utility
US 5,881,614 · App. 08/762,321
Tool with reversible bit and method of assembly
Inventor:
Hu Cheng-Tsan
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Dec 9, 1996
Inventor
Hu Cheng-Tsan
Assignee (at issue)
Millers Falls 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.