Granted Patent
Utility
US 5,690,501 · App. 08/578,298
"Electrical power transfer for 3/4"" offset pivots"
Inventor:
Gerald E. Mader
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Dec 26, 1995
Inventor
Gerald E. Mader
Assignee (at issue)
Von Duprin LLC
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.