Granted Patent
Utility
US 4,554,400 · App. 06/630,191
Radio-frequency-tight shielding with planar parts
Inventor:
Dieter Schmalzl
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Jul 12, 1984
Inventor
Dieter Schmalzl
Assignee (at issue)
Siemens Aktiengesellschaft
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.