Granted Patent
Utility
US 5,164,357 · App. 07/710,493
Thermally-responsive record material
Inventors:
Gerald C. Bartman, Steven L. Vervacke, Peggy Dorothy Sands
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Jun 5, 1991
Inventors
Gerald C. Bartman
Steven L. Vervacke
Peggy Dorothy Sands
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.