Granted Patent
Utility
US 5,461,709 · App. 08/024,239
3D input system for CAD systems
Inventor:
Robert J. Brown
Patented Case
View Patent ↗
Granted: Oct 24, 1995
Filed: Feb 26, 1993
Inventor
Robert J. Brown
Assignee (at issue)
Intergraph 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.