Granted Patent
Utility
US 6,765,317 · App. 10/112,863
Power supply module for electrical power tools
Inventor:
Raymond Wai Hang Chu
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Apr 2, 2002
Inventor
Raymond Wai Hang Chu
Assignee (at issue)
Defond Manufacturing Limited
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.