Granted Patent
Utility
US 4,647,232 · App. 06/756,222
Multicolor thermal printer
Inventor:
Jorge Costa
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Jul 18, 1985
Inventor
Jorge Costa
Assignee (at issue)
Hermes Precisa International S.A.
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.