Granted Patent
Utility
US 4,391,875 · App. 06/215,508
Asbestos products of improved physical properties having metal oxides on the surfaces thereof
Inventors:
Byeong Hak Jo, Jerry Zucker
Patented Case
View Patent ↗
Granted: Jul 5, 1983
Filed: Dec 11, 1980
Inventors
Byeong Hak Jo
Jerry Zucker
Assignee (at issue)
RM Industrial Products Company, Inc.
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.