Granted Patent
Utility
US 4,205,967 · App. 05/958,452
Adsorbent fractionator with system gas powered cycle control and process
Inventors:
Leslie W. Sandman, Paul M. McKey
Patented Case
View Patent ↗
Granted: Jun 3, 1980
Filed: Nov 6, 1978
Inventors
Leslie W. Sandman
Paul M. McKey
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.