Granted Patent
Utility
US 6,252,439 · App. 09/301,012
Current level detector device for protecting a circuit against alternating current overcurrents
Inventor:
Didier Leblanc
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: Apr 28, 1999
Inventor
Didier Leblanc
Assignees (at issue)
LE GRAND CO., LTD.
LEGRAND SNC
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.