Granted Patent
Utility
US 4,707,174 · App. 06/931,951
Fabrication of high-silica glass article
Inventors:
David W. Johnson, Jr., John B. MacChesney, Eliezer M. Rabinovich, Eva M. Vogel
Patented Case
View Patent ↗
Granted: Nov 17, 1987
Filed: Nov 20, 1986
Inventors
David W. Johnson, Jr.
John B. MacChesney
Eliezer M. Rabinovich
Eva M. Vogel
Assignee (at issue)
American Telephone and Telegraph Company, AT&T Bell Laboratories
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.