Granted Patent
Utility
US 4,768,726 · App. 07/001,649
Toroidal coil winding machine to wind a toroidal core having a small opening
Inventor:
Rudolf Fahrbach
Patented Case
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Granted: Sep 6, 1988
Filed: Jan 9, 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.