Granted Patent
Utility
US 6,477,825 · App. 10/124,457
Flattening and machining method and apparatus
Inventors:
Souichi Katagiri, Kan Yasui
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Apr 18, 2002
Inventors
Souichi Katagiri
Kan Yasui
Assignee (at issue)
HITACHI, 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.