Granted Patent
Utility
US 4,544,878 · App. 06/538,946
Switched current mirror
Inventors:
Richard Gale Beale, Apparajan Ganesan
Patented Case
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Granted: Oct 1, 1985
Filed: Oct 4, 1983
Inventors
Richard Gale Beale
Apparajan Ganesan
Assignee (at issue)
AT&T Bell Laboratories
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.