Granted Patent
Utility
US 4,329,314 · App. 06/202,870
Method and apparatus for inside frosting of tubing
Inventors:
Isaac S. Jackson, L. Nelson Tilford
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Oct 31, 1980
Inventors
Isaac S. Jackson
L. Nelson Tilford
Assignee (at issue)
MALLINCKRODT LLC
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.