Granted Patent
Utility
US 5,596,480 · App. 08/218,625
Split rotatable keyboard
Inventors:
Brian E. Manser, Peter A. Ojeda, Anton R. Poole, Frank W. Guoming
Patented Case
View Patent ↗
Granted: Jan 21, 1997
Filed: Mar 28, 1994
Inventors
Brian E. Manser
Peter A. Ojeda
Anton R. Poole
Frank W. Guoming
Assignee (at issue)
Zenith Data Systems 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.