Granted Patent
Utility
US 4,643,879 · App. 06/750,793
Tower for analyzing system
Inventor:
Richard W. Hanaway
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Jul 1, 1985
Inventor
Richard W. Hanaway
Assignee (at issue)
American Hospital Supply Corp.
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.