Granted Patent
Utility
US 5,606,813 · App. 08/194,326
Marker devices
Inventors:
Herv e Cornu, Lo ic Le Bihan, Jean-Pierre Robbes
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Feb 8, 1994
Inventors
Herv e Cornu
Lo ic Le Bihan
Jean-Pierre Robbes
Assignee (at issue)
LE GRAND 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.