Granted Patent
Utility
US 5,089,948 · App. 07/546,117
High speed optoisolator switching apparatus
Inventors:
Peter James Brown, Suresh Hariharan
Patented Case
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Granted: Feb 18, 1992
Filed: Jun 29, 1990
Inventors
Peter James Brown
Suresh Hariharan
Assignee (at issue)
Digital Equipment Corporation
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.