Granted Patent
Utility
US 4,547,621 · App. 06/623,860
Stable photovoltaic devices and method of producing same
Inventors:
Michael Hack, Subhendu Guha
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Jun 25, 1984
Inventors
Michael Hack
Subhendu Guha
Assignee (at issue)
Sovonics Solar Systems
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.