Granted Patent
Utility
US 4,569,017 · App. 06/564,132
Duplex central processing unit synchronization circuit
Inventors:
Robert E. Renner, Thomas J. Perry
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: Dec 22, 1983
Inventors
Robert E. Renner
Thomas J. Perry
Assignee (at issue)
GTE Automatic Electric Incorporated
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.