Granted Patent
Utility
US 4,849,286 · App. 07/132,033
Transparent plotter film
Inventor:
Marjorie H. Milne
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Dec 14, 1987
Inventor
Marjorie H. Milne
Assignee (at issue)
James River Graphics 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.