Granted Patent
Utility
US 5,221,891 · App. 07/829,456
Control circuit for a solar-powered rechargeable power source and load
Inventors:
Rudolph W. Janda, Jerald L. Douglas, Edward F. Condon, Jr.
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Jan 31, 1992
Inventors
Rudolph W. Janda
Jerald L. Douglas
Edward F. Condon, Jr.
Assignee (at issue)
Intermatic Incorporated
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.