Granted Patent
Utility
US 4,402,607 · App. 06/150,363
Automatic detector for microscopic dust on large-area, optically unpolished surfaces
Inventors:
Lance McVay, Pedro Lilienfeld
Patented Case
View Patent ↗
Granted: Sep 6, 1983
Filed: May 16, 1980
Inventors
Lance McVay
Pedro Lilienfeld
Assignee (at issue)
GCA 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.