Granted Patent
Utility
US 6,223,834 · App. 09/315,956
Impact structure for impact power tool
Inventors:
Akio Takamura, Yasuhiro Takarayama, Kouki Morimoto
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: May 21, 1999
Inventors
Akio Takamura
Yasuhiro Takarayama
Kouki Morimoto
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.