Granted Patent
Utility
US 4,516,787 · App. 06/440,774
Lightguide preform chuck
Inventor:
Edward R. Venable
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Nov 10, 1982
Inventor
Edward R. Venable
Assignee (at issue)
AT&T Technologies Incorporated
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.