Granted Patent
Utility
US 6,651,990 · App. 09/921,887
Tool holder
Inventors:
Takehito Higasi, Yasuo Wada
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Aug 6, 2001
Inventors
Takehito Higasi
Yasuo Wada
Assignee (at issue)
RYOBI 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.