Granted Patent
Utility
US 6,220,114 · App. 09/280,944
Control knob positioning device having tactile feedback
Inventor:
Aloke K. Ray
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Mar 29, 1999
Inventor
Aloke K. Ray
Assignee (at issue)
Delphi Technologies
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.