Granted Patent
Utility
US 4,286,516 · App. 06/084,817
Electronic control for timing hammers in impact printers
Inventor:
Harry Wertanen
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: Oct 15, 1979
Inventor
Harry Wertanen
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.