Granted Patent
Utility
US 4,462,332 · App. 06/372,937
Magnetic gas gate
Inventors:
Prem Nath, David A. Gattuso
Patented Case
View Patent ↗
Granted: Jul 31, 1984
Filed: Apr 29, 1982
Inventors
Prem Nath
David A. Gattuso
Assignee (at issue)
Energy Conversion Devices, 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.