Granted Patent
Utility
US 5,129,089 · App. 07/771,784
Distributed interlock apparatus and distributed interlock management method
Inventor:
Michael Nielsen
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Oct 3, 1991
Inventor
Michael Nielsen
Assignee (at issue)
Digital Equipment Corporation
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.