Granted Patent
Utility
US 4,331,866 · App. 06/156,730
Electro-mechanical digital feed control
Inventor:
Alfred Batzdorff
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Jun 5, 1980
Inventor
Alfred Batzdorff
Assignee (at issue)
American Electronic Laboratories, 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.