Granted Patent
Utility
US 5,068,149 · App. 07/249,909
Wire member of cemented carbide
Inventors:
Fumio Shimada, Tadashi Kainuma
Patented Case
View Patent ↗
Granted: Nov 26, 1991
Filed: Sep 27, 1988
Inventors
Fumio Shimada
Tadashi Kainuma
Assignee (at issue)
MITSUBISHI MATERIALS 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.