Granted Patent
Utility
US 6,835,028 · App. 10/757,517
Indexable insert and cutting tool
Inventors:
Hiroshi Usui, Takayuki Kagami
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Jan 15, 2004
Inventors
Hiroshi Usui
Takayuki Kagami
Assignee (at issue)
NGK SPARK PLUG CO., 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.