Patent US 5371851A

Patent number	US 5371851A (click link for details and documents via Google Patents)
Title	Graphical data base editor
Inventors	Chris M. Pieper, Cathie J. B. Wier, Eric M. Bush, Thomas W. Rudwick, III, William A. Greenseth, Robert R. Klingenberg, David Du Pont
Company	Credence Systems Corporation
Filing date	1989-04-26
Grant date	1994-12-06