Granted Patent
Utility
US 4,009,126 · App. 05/593,724
Catalyst for removing acetylenic impurities
Inventor:
Cecil G. McFarland
Patented Case
View Patent ↗
Granted: Feb 22, 1977
Filed: Jul 7, 1975
Inventor
Cecil G. McFarland
Assignee (at issue)
Petro-Tex Chemical 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.