Granted Patent
Utility
US 4,276,567 · App. 06/059,560
Recording line elements
Inventors:
Klaus Wellendorf, Gerhard Sing
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Jul 23, 1979
Inventors
Klaus Wellendorf
Gerhard Sing
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.