Granted Patent
Utility
US 4,366,191 · App. 05/870,852
Method of increasing the strength of carbon and graphite members
Inventors:
Guido Gistinger, Manfred Schmid
Patented Case
View Patent ↗
Granted: Dec 28, 1982
Filed: Jan 19, 1978
Inventors
Guido Gistinger
Manfred Schmid
Assignee (at issue)
Sigri Elektrographit 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.