Granted Patent
Utility
US 5,989,384 · App. 08/753,861
Method of using a variable force compactor
Inventors:
Michael N. Grimshaw, James R. Hecht
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Dec 3, 1996
Inventors
Michael N. Grimshaw
James R. Hecht
Assignee (at issue)
Unova IP Corp.
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.