Granted Patent
Utility
US 5,190,102 · App. 07/807,720
Sintered metal substitute for prepack screen aggregate
Inventors:
Bryant A. Arterbury, James E. Spangler, Thomas V. Malorzo
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: Dec 16, 1991
Inventors
Bryant A. Arterbury
James E. Spangler
Thomas V. Malorzo
Assignee (at issue)
Otis Engineering 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.