Granted Patent
Utility
US 5,087,870 · App. 07/417,372
Constant power circuit
Inventors:
Emery Salesky, Tom Sterk
Patented Case
View Patent ↗
Granted: Feb 11, 1992
Filed: Oct 5, 1989
Inventors
Emery Salesky
Tom Sterk
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.