Granted Patent
Utility
US 4,520,379 · App. 06/620,997
Thermally-responsive record material
Inventors:
Kenneth D. Glanz, Troy E. Hoover
Patented Case
View Patent ↗
Granted: May 28, 1985
Filed: Jun 15, 1984
Inventors
Kenneth D. Glanz
Troy E. Hoover
Assignee (at issue)
Appleton Papers 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.