Granted Patent
Utility
US 6,782,170 · App. 09/755,406
Optical device having a reference mark system
Inventors:
John William Stayt, Jr., Frank Stephen Walters
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Jan 5, 2001
Inventors
John William Stayt, Jr.
Frank Stephen Walters
Assignee (at issue)
TriQuint Technology Holding Co.
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.