Granted Patent
Utility
US 4,508,815 · App. 06/548,465
Recessed metallization
Inventors:
Paul Ackmann, Frank R. Bryant
Patented Case
View Patent ↗
Granted: Apr 2, 1985
Filed: Nov 3, 1983
Inventors
Paul Ackmann
Frank R. Bryant
Assignee (at issue)
Mostek 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.