Granted Patent
Utility
US 4,823,310 · App. 07/084,253
Device for enabling concurrent access of indexed sequential data files
Inventor:
Arthur Grand
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: Aug 10, 1987
Inventor
Arthur Grand
Assignee (at issue)
Wang Laboratories, 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.