Granted Patent
Utility
US 4,956,745 · App. 07/349,705
Transformer assembly with exposed laminations and hollow housings
Inventors:
Peter H. Burgher, Richard L. Holmes, John Boomer
Patented Case
View Patent ↗
Granted: Sep 11, 1990
Filed: May 10, 1989
Inventors
Peter H. Burgher
Richard L. Holmes
John Boomer
Assignee (at issue)
Marelco Power Systems, Inc.
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.