Granted Patent
Utility
US 6,287,100 · App. 09/446,367
Sealing device on a shaft journal of a dry-running helical rotary compressor
Inventors:
Carsten Achtelik, Karl-Heinz Gilfert, Arno Heinz, Walter Murmann
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Jul 18, 2000
Inventors
Carsten Achtelik
Karl-Heinz Gilfert
Arno Heinz
Walter Murmann
Assignee (at issue)
GHH Rand Schraubenkompressoren 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.