Granted Patent
Utility
US 4,829,048 · App. 07/252,988
Thermal transfer printing
Inventors:
Peter Gregory, Richard A. Hann
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Oct 4, 1988
Inventors
Peter Gregory
Richard A. Hann
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.