Granted Patent
Utility
US 4,586,835 · App. 06/695,997
Printer for printing characters in two alternative print qualities
Inventors:
Randall W. Alexander, Demetrios Troupes
Patented Case
View Patent ↗
Granted: May 6, 1986
Filed: Jan 29, 1985
Inventors
Randall W. Alexander
Demetrios Troupes
Assignee (at issue)
International Business Machines 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.