Granted Patent
Utility
US 4,239,543 · App. 06/011,003
Non-crusting jet ink and method of making same
Inventor:
J. Donald Beasley
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Feb 9, 1979
Inventor
J. Donald Beasley
Assignee (at issue)
Gould 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.