Granted Patent
Utility
US 6,300,938 · App. 09/291,582
Multiple-cylinder control device for computers and other electronic apparatus
Inventor:
Craig F. Culver
Patented Case
View Patent ↗
Granted: Oct 9, 2001
Filed: Apr 12, 1999
Inventor
Craig F. Culver
Assignee (at issue)
Immersion, LLC
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.