Granted Patent
Utility
US 4,277,689 · App. 06/102,665
Document reader
Inventors:
Robert J. Thomas, Michael Piekarski, Gary B. Morgan, John Rank, William O. Thurman, Donald C. Lerch
Patented Case
View Patent ↗
Granted: Jul 7, 1981
Filed: Dec 12, 1979
Inventors
Robert J. Thomas
Michael Piekarski
Gary B. Morgan
John Rank
William O. Thurman
Donald C. Lerch
Assignee (at issue)
Key Tronic 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.