Granted Patent
Utility
US 4,816,658 · App. 07/036,150
Card reader for security system
Inventors:
Bhupendra J. Khandwala, Jorge A. Young, Sarkis V. Kalustian
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: Apr 3, 1987
Inventors
Bhupendra J. Khandwala
Jorge A. Young
Sarkis V. Kalustian
Assignee (at issue)
Casi-Rusco, Inc.
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.