Granted Patent
Utility
US 5,182,444 · App. 07/606,101
Split lens displaced long from each other along plane of cut
Inventor:
James W. Howard
Patented Case
View Patent ↗
Granted: Jan 26, 1993
Filed: Oct 31, 1990
Inventor
James W. Howard
Assignee (at issue)
Digital Equipment Corporation
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.