Granted Patent
Utility
US 4,249,689 · App. 06/123,151
Methods of and apparatus for advancing elongated material
Inventor:
James E. Voytko
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Feb 21, 1980
Inventor
James E. Voytko
Assignee (at issue)
Western Electric Company, 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.