Granted Patent
Utility
US 4,459,793 · App. 06/385,242
Composite container construction
Inventor:
Richard D. Zenger
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: Jun 4, 1982
Inventor
Richard D. Zenger
Assignee (at issue)
National Crane 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.