Granted Patent
Utility
US 5,276,396 · App. 07/851,651
Planar magnetic harmonic sensor for detecting small quantities of magnetic substances
Inventor:
Thomas Seitz
Patented Case
View Patent ↗
Granted: Jan 4, 1994
Filed: Mar 16, 1992
Inventor
Thomas Seitz
Assignee (at issue)
Landis & Gyr Betriebs AG
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.