Granted Patent
Utility
US 4,249,033 · App. 06/029,725
Vented radio frequency shielded enclosure
Inventors:
David L. Darakjy, Leland A. Zanteson
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Apr 13, 1979
Inventors
David L. Darakjy
Leland A. Zanteson
Assignee (at issue)
SYSTEM DEVELOPMENT 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.