Granted Patent
Utility
US 5,032,787 · App. 07/431,477
Electrical test probe having rotational control of the probe shaft
Inventors:
Charles J. Johnston, Mark A. Swart
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Nov 3, 1989
Inventors
Charles J. Johnston
Mark A. Swart
Assignee (at issue)
Everett/Charles Contact Products, 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.