Granted Patent
Utility
US 4,981,300 · App. 07/305,352
Sensory games
Inventor:
Eric E. Winkler
Patented Case
View Patent ↗
Granted: Jan 1, 1991
Filed: Feb 1, 1989
Inventor
Eric E. Winkler
Assignee (at issue)
Saitek Ltd.
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.