Granted Patent
Utility
US 4,997,683 · App. 07/448,789
Method for increasing the density of an article
Inventor:
Joseph M. Wright
Patented Case
View Patent ↗
Granted: Mar 5, 1991
Filed: Dec 11, 1989
Inventor
Joseph M. Wright
Assignee (at issue)
Ford Aerospace 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.