Granted Patent
Utility
US 4,256,214 · App. 06/033,973
System for overhead transport of panel members
Inventor:
Harry E. Back
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Apr 27, 1979
Inventor
Harry E. Back
Assignee (at issue)
Champion International Corporation Limited
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.