Granted Patent
Utility
US 5,844,555 · App. 08/667,187
Locking mechanism for live mathematical documents
Inventors:
Samuel Menaker, Michael Stout
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: Jun 20, 1996
Inventors
Samuel Menaker
Michael Stout
Assignee (at issue)
Mathsoft, 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.