Granted Patent
Utility
US 4,255,169 · App. 06/051,210
Method of conservation in processing industrial air
Inventors:
Raymond M. Leliaert, Robert N. Lindner, James Davidson
Patented Case
View Patent ↗
Granted: Mar 10, 1981
Filed: Jun 22, 1979
Inventors
Raymond M. Leliaert
Robert N. Lindner
James Davidson
Assignee (at issue)
Wheelabrator-Frye Inc.
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.