Granted Patent
Utility
US 4,287,572 · App. 06/068,680
Method for writing on archival target and target produced thereby
Inventor:
Harold F. Webster
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: Aug 22, 1979
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.