Granted Patent
Utility
US 5,148,765 · App. 07/483,157
Printed-wireboard photoimaging
Inventors:
Paul L. K. Hung, John Cioffi, Mark L. Lavach
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Feb 22, 1990
Inventors
Paul L. K. Hung
John Cioffi
Mark L. Lavach
Assignee (at issue)
Elf Atochem North America, Inc.
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.