Granted Patent
Utility
US 4,245,260 · App. 05/941,542
Method for improved reproduction of edges by engraving screened printing forms
Inventor:
Juergen Doelves
Patented Case
View Patent ↗
Granted: Jan 13, 1981
Filed: Sep 11, 1978
Inventor
Juergen Doelves
Assignee (at issue)
Dr. Ing. Rudolf Hell GmbH
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.