Granted Patent
Utility
US 5,230,182 · App. 07/922,910
Apparatus for optical materials fabrication by ultrasonic machining
Inventors:
Keith Daniell, Matthew B. Magida, Steven Chuang, Joann Magner, D. P. Mathur
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Jul 31, 1992
Inventors
Keith Daniell
Matthew B. Magida
Steven Chuang
Joann Magner
D. P. Mathur
Assignee (at issue)
Hughes Aircraft Company
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.