Granted Patent
Utility
US 4,162,146 · App. 05/860,280
Multi-chamber adsorbent gas fractionator with non-jamming effluent flow control valve
Inventor:
Chesterfield F. Seibert
Patented Case
View Patent ↗
Granted: Jul 24, 1979
Filed: Dec 14, 1977
Inventor
Chesterfield F. Seibert
Assignee (at issue)
Pall Corporation
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.