Granted Patent
Utility
US 5,885,853 · App. 07/979,552
Hollow chip package and method of manufacture
Inventor:
William Hamburgen
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Nov 18, 1992
Inventor
William Hamburgen
Assignee (at issue)
Digital Equipment 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.