Granted Patent
Utility
US 4,370,590 · App. 06/190,941
Method for writing on archival target and target produced thereby
Inventor:
Harold F. Webster
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Sep 25, 1980
Inventor
Harold F. Webster
Assignee (at issue)
General Electric Company
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.