Granted Patent
Utility
US 4,390,897 · App. 06/255,077
Technique for automatically centering a lightguide fiber in a coating
Inventor:
David H. Smithgall, Sr.
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Apr 17, 1981
Inventor
David H. Smithgall, Sr.
Assignee (at issue)
Western Electric Company, 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.