Granted Patent
Utility
US 6,346,980 · App. 09/669,756
Ground positioning system applied in a distance measuring device
Inventors:
Nobuhiro Tani, Shuzo Seo, Shinichi Kakiuchi, Kiyoshi Yamamoto
Patented Case
View Patent ↗
Granted: Feb 12, 2002
Filed: Sep 26, 2000
Inventors
Nobuhiro Tani
Shuzo Seo
Shinichi Kakiuchi
Kiyoshi Yamamoto
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.