Granted Patent
Utility
US 5,218,174 · App. 07/771,369
Low power cordless magnetic field digitizer with differential grid sensing and synchronous position demodulation
Inventors:
Donald F. Gray, James L. Rodgers, James R. Sciacero, Charles A. Waterbury
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: Oct 1, 1991
Inventors
Donald F. Gray
James L. Rodgers
James R. Sciacero
Charles A. Waterbury
Assignee (at issue)
Kurta 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.