Granted Patent
Utility
US 5,155,693 · App. 07/577,966
Self documenting record of instrument activity and error messages stamped with date and time of occurrence
Inventors:
Lee H. Altmayer, Christopher M. Wurm
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Sep 5, 1990
Inventors
Lee H. Altmayer
Christopher M. Wurm
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.