Granted Patent
Utility
US 4,643,569 · App. 06/746,177
Dual beam laser inspection apparatus
Inventors:
Sean Sullivan, Glenn E. Stutz
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Jun 18, 1985
Inventors
Sean Sullivan
Glenn E. Stutz
Assignee (at issue)
Lincoln Laser 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.