Granted Patent
Utility
US 5,169,874 · App. 07/879,232
Stabilized 141b
Inventors:
Richard M. Crooker, Maher Y. Elsheikh, John A. Murphy
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: May 6, 1992
Inventors
Richard M. Crooker
Maher Y. Elsheikh
John A. Murphy
Assignee (at issue)
Elf Atochem North America, 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.