Granted Patent
Utility
US 4,490,821 · App. 06/448,964
Centralized clock time error correction system
Inventor:
William A. Lacher
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Dec 13, 1982
Inventor
William A. Lacher
Assignee (at issue)
Burroughs, Inc.
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.