Granted Patent
Utility
US 4,725,009 · App. 07/002,119
Toroidal coil winding machine for tape or heavy wire
Inventor:
Rudolf Fahrbach
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Jan 12, 1987
Inventor
Rudolf Fahrbach
Assignee (at issue)
Universal 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.