Granted Patent
Utility
US 4,624,111 · App. 06/720,732
Preseparator for a pipe carrying a two-phase mixture
Inventor:
Helmut Lang
Patented Case
View Patent ↗
Granted: Nov 25, 1986
Filed: Apr 8, 1985
Inventor
Helmut Lang
Assignee (at issue)
BBC Brown, Boveri & Company Ltd.
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.