Granted Patent
Utility
US 4,975,545 · App. 07/221,590
Sealed relay assembly
Inventors:
Endy China, Alan Lo
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Jul 20, 1988
Inventors
Endy China
Alan Lo
Assignee (at issue)
Wickes Manufacturing Co.
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.