Granted Patent
Utility
US 4,929,065 · App. 07/266,670
Glass plate fusion for macro-gradient refractive index materials
Inventors:
James J. Hagerty, David N. Pulsifer
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Nov 3, 1988
Inventors
James J. Hagerty
David N. Pulsifer
Assignee (at issue)
Isotec Limited
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.