Granted Patent
Utility
US 4,786,504 · App. 06/876,408
Colored intagliated articles
Inventors:
Sidney F. Forse, Raymond C. Rowe
Patented Case
View Patent ↗
Granted: Nov 22, 1988
Filed: Jun 20, 1986
Inventors
Sidney F. Forse
Raymond C. Rowe
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.