IP Library Granted Patent US 4,569,017
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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,569,017
App. No.
06/564,132
Filed
1983-12-22
Granted
1986-02-04
Kind
A