Granted Patent
Utility
US 6,281,482 · App. 09/615,319
Electrical switch
Inventor:
Raymond Wai Hang Chu
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Jul 13, 2000
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.