Granted Patent
Utility
US 6,295,798 · App. 09/356,150
Method and apparatus for manufacturing steel card
Inventors:
Dal Hyang Bae, Yong Min Park, Ju Seok Koh
Patented Case
View Patent ↗
Granted: Oct 2, 2001
Filed: Jul 19, 1999
Inventors
Dal Hyang Bae
Yong Min Park
Ju Seok Koh
Assignee (at issue)
HYOSUNG 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.