Granted Patent
Utility
US 6,021,939 · App. 09/000,925
Method of producing a wear resistant mechanical component
Inventors:
Tong Seub Shim, Kyung Woon Kim
Patented Case
View Patent ↗
Granted: Feb 8, 2000
Filed: Dec 30, 1997
Inventors
Tong Seub Shim
Kyung Woon Kim
Assignee (at issue)
Daewoo Heavy Industries Ltd.
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.