Granted Patent
Utility
US 6,310,557 · App. 09/270,972
Circuit and device to detect grounding problems in electrical soldering irons
Inventors:
Lyle Dwight Nelsen, Steven Bernard Heymann
Patented Case
View Patent ↗
Granted: Oct 30, 2001
Filed: Mar 17, 1999
Inventors
Lyle Dwight Nelsen
Steven Bernard Heymann
Assignee (at issue)
Novx Corporation
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.