Granted Patent
Utility
US 6,744,249 · App. 10/143,895
Method and instrument for measuring a magnetic field, a method for measuring a current waveform, and method for measuring an electric field
Inventors:
Hiroshi Suzuki, Tomokazu Shimakura, Kimio Nakamura
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: May 14, 2002
Inventors
Hiroshi Suzuki
Tomokazu Shimakura
Kimio Nakamura
Assignee (at issue)
HITACHI, 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.