Granted Patent
Utility
US 4,186,173 · App. 05/832,757
Apparatus for producing monocrystals
Inventors:
Karl Jericho, Joachim Floymayr, Uwe Reimpell, Dieter Drechsel
Patented Case
View Patent ↗
Granted: Jan 29, 1980
Filed: Sep 12, 1977
Inventors
Karl Jericho
Joachim Floymayr
Uwe Reimpell
Dieter Drechsel
Assignee (at issue)
Leybold-Heraeus GmbH & Co. KG
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.