Granted Patent
Utility
US 6,209,827 · App. 09/323,725
Clamp device
Inventor:
Tsutomu Kawai
Patented Case
View Patent ↗
Granted: Apr 3, 2001
Filed: Jun 1, 1999
Inventor
Tsutomu Kawai
Assignee (at issue)
KITAGAWA INDUSTRIES 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.