Granted Patent
Utility
US 4,779,812 · App. 07/005,326
Toroidal electrical transformer and method of producing same
Inventors:
John L. Fisher, Herbert J. Macemon, James D. Richerson, Richard W. Wiedo, Joe E. Curtis, Jr., James F. Rafferty, Thomas H. Aishton
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Jan 15, 1987
Inventors
John L. Fisher
Herbert J. Macemon
James D. Richerson
Richard W. Wiedo
Joe E. Curtis, Jr.
James F. Rafferty
Thomas H. Aishton
Assignee (at issue)
Kuhlman Corporation
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.