Granted Patent
Utility
US 5,516,405 · App. 08/152,031
Retention aids
Inventor:
James A. De Witt
Patented Case
View Patent ↗
Granted: May 14, 1996
Filed: Sep 20, 1993
Inventor
James A. De Witt
Assignee (at issue)
MacMillan Bloedel 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.