Granted Patent
Utility
US 4,678,871 · App. 06/757,334
Reversing switch for rechargeable hand tool
Inventor:
Jun G. Wong
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Jul 22, 1985
Inventor
Jun G. Wong
Assignee (at issue)
Skil Corporation
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.