Granted Patent
Utility
US 5,014,012 · App. 07/374,117
D.C. biasing apparatus
Inventors:
Yoichi Kuboyama, Koichi Yanagawa
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Jun 30, 1989
Inventors
Yoichi Kuboyama
Koichi Yanagawa
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.