Granted Patent
Utility
US 6,731,392 · App. 10/020,298
Marker used for measuring displacement of moving object and method therefor
Inventors:
Seok Ho Kim, Sam Yong Chung, Song Soo Han, Sang Heon Lee, Bum Jae You, Sang Rok Oh, Mee Seub Lim
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Dec 18, 2001
Inventors
Seok Ho Kim
Sam Yong Chung
Song Soo Han
Sang Heon Lee
Bum Jae You
Sang Rok Oh
Mee Seub Lim
Assignee (at issue)
SAMSUNG 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.