Granted Patent
Utility
US 5,175,938 · App. 07/694,802
Electrical guide for tight tolerance machining
Inventor:
Alan Smith
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: May 17, 1991
Inventor
Alan Smith
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.