Granted Patent
Utility
US 4,475,322 · App. 06/221,875
Medical see-through columns
Inventors:
Joseph L. Russo, Richard Sonder, Wesley W. Schwartz
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Dec 31, 1980
Inventors
Joseph L. Russo
Richard Sonder
Wesley W. Schwartz
Assignee (at issue)
Square D Company
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.