Granted Patent
Utility
US 4,603,231 · App. 06/480,652
System for sensing spatial coordinates
Inventors:
Leonard Reiffel, Wayne D. Jung
Patented Case
View Patent ↗
Granted: Jul 29, 1986
Filed: Mar 31, 1983
Inventors
Leonard Reiffel
Wayne D. Jung
Assignee (at issue)
Interand 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.