Granted Patent
Utility
US 5,233,157 · App. 07/580,749
Laser pattern ablation of fine line circuitry masters
Inventors:
Christopher Schreiber, William R. Crumly
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Sep 11, 1990
Inventors
Christopher Schreiber
William R. Crumly
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.