Granted Patent
Utility
US 4,648,764 · App. 06/385,697
Portable stacking containers locking device
Inventor:
Michael J. Pavlick
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Jun 7, 1982
Inventor
Michael J. Pavlick
Assignee (at issue)
The Budd 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.